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3D-printed guns, like the one allegedly used to kill a health care CEO, are a growing threat in the US and around the world

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3D-printed
A federal firearms official displays several guns that are either entirely or partially 3D-printed. Saul Loeb/AFP via Getty Images

Nir Kshetri, University of North Carolina – Greensboro

Police investigating the shooting of UnitedHealthcare CEO Brian Thompson on Dec. 4, 2024, have announced that the suspected assailant had used a 3D-printed gun. Several high-profile crimes in recent years have involved this kind of homemade, or partially homemade, weapon.

Often called “ghost guns” because they can be hard to trace, these firearms can be either partially or completely made with components that have been produced in metal or plastic on commercially available 3D printers. The U.S. Supreme Court is considering the legality of current federal restrictions on these firearms.

The first known criminal case involving a 3D-printed gun resulted in the arrest of a U.K. man in 2013. But since then, police worldwide have reported finding increasing numbers of these weapons.

My research focuses on the economic and social effects of advanced digital technologies, including 3D printing. I see that the use of 3D-printed guns in criminal and violent activities is likely to continue to increase. And it will likely prove ever harder for governments and police to regulate these firearms.

Surge in arrests and seizures

Arrests and seizures connected to 3D-printed guns are escalating quickly. Between 2017 and 2021, U.S. law enforcement agencies seized and reported nearly 38,000 suspected ghost guns, according to a 2024 report from the U.S. Bureau of Alcohol, Tobacco, Firearms and Explosives. In 2021 alone, 19,273 suspected ghost guns were traced, a significant increase from 8,504 in 2020. The number of seized 3D-printed guns in New York state alone surged dramatically, from 100 in 2019 to 637 in 2022.

Arrests linked to 3D-printed guns are also rising. The world recorded 108 arrests in the first half of 2023, compared to 66 arrests in all 2022.

North America leads in 3D-printed gun-related arrests, with 166 cases from 2013 to June 2023. Europe followed with 48 arrests, while Oceania ranked third with 24 arrests.

The U.S. is a particular hot spot, with 36% of total global arrests related to 3D-printed firearms in 2023. But Canada is close behind, with 34%. The U.K. had 10%, and Australia had 8%.

Growing global security threat

Police and media reports indicate that many efforts to acquire or manufacture 3D-printed firearms were connected to plans for violent actions.

These guns have been used by diverse groups including far-right extremists, ethno-separatists, jihadists, left-wing anarchists, organized crime groups in Europe and pro-democracy rebels in Myanmar.

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From 2019 to mid-2022, there were at least nine documented cases in Europe and Australia of extremists, terrorists or paramilitary groups either producing or attempting to produce firearms using 3D-printing technology. An analysis of 165 cases of 3D-printed firearms from 2013 to mid-2024 reveals that 15% were linked to terrorism. Far-right groups appear to be the most frequent users among terrorism-related cases.

A widely varied legal landscape

Often, 3D-printed guns are homemade firearms without serial numbers. This lack of identification makes them attractive to criminals because it is harder for law enforcement to link specific guns to particular crimes or suspects. Different countries take very different approaches to regulating these weapons.

Japan enforces stringent laws governing the manufacture, possession and sales of firearms. Its legal system strictly prohibits unauthorized firearm production, including 3D-printed guns. In 2014, a 28-year-old Japanese man was sentenced to two years in prison for producing plastic 3D-printed firearms.

In 2023, Canada effectively banned ghost guns. It is illegal to possess or manufacture them without a license from the government.

In Australia, making a 3D-printed firearm is illegal, and in some states, possessing a digital blueprint to create one is also an offense. In the state of New South Wales, a person convicted of possessing blueprints can face up to 14 years in prison. In Tasmania state, the punishment can be even more severe – up to 21 years in prison.

Across the European Union, making or owning homemade firearms, including 3D-printed ones, is broadly prohibited. However, laws and penalties vary, with some nations criminalizing even the possession of digital files or blueprints related to 3D-printing guns.

In the U.K., where firearms are very restricted, 3D-printed guns have been considered illegal. But in November 2022, the government updated the laws to specifically ban possessing, buying or producing parts for 3D-printed guns. The proposal aims to explicitly ban 3D-printed guns, addressing their unique challenges directly, rather than relying on existing laws designed for traditional firearms. The U.K. National Crime Agency has called for a ban on possessing blueprints as well, and Parliament is currently considering two bills proposing such a ban. https://www.youtube.com/embed/c1g-C7c-57U?wmode=transparent&start=0 An NBC News investigation describes how easy it is to build a ghost gun.

Federal rules in the US

The U.S. Constitution poses some unique challenges to regulating ghost guns, especially for the federal government, but also for states.

For regular firearms – that is, those not produced by 3D printing – U.S. federal law requires that a key component, called the lower receiver, bear a unique serial number. Purchasing a lower receiver requires a federal background check and conducting the transaction through a merchant who holds a Federal Firearms License.

The situation is more complicated when it comes to 3D printing weapons. The First Amendment to the Constitution protects freedom of expression, which includes sharing digital files that could contain firearm designs. And the Second Amendment protects citizens’ right to bear arms.

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In the U.S., selling 3D-printed firearms requires a federal license. But producing or owning homemade firearms for personal use is allowed. That includes 3D-printing the lower receiver component, and assembling the rest of the weapon with unregulated parts.

Current federal law, under review by the Supreme Court, also requires 3D-printed guns meet specific guidelines, even if they do not contain any currently regulated firearms components. Under the rule, makers of ghost gun kits must obtain a federal license, conduct background checks, record information about their customers and add serial numbers to their products.

The type of weapon also matters when determining the legality of a 3D-printed firearm. Automatic weapons, or machine guns, can continue to fire ammunition as long as the user holds the trigger down. These weapons have been heavily regulated by federal law for almost 90 years.

Criminals have used 3D printers to produce “Glock switches” or auto-sears, which convert semi-automatic firearms into fully automatic machine guns. That turns those items into machine guns under federal law, making them illegal. Owning this kind of 3D-printed conversion device can lead to a maximum of 10 years in federal prison and a $250,000 fine.

A group of firearm parts.
3D-printed gun components seized by police in Mineola, N.Y., Dec. 10, 2024. Howard Schnapp/Newsday RM via Getty Images

In the states

The states can also regulate firearms, and many are trying to get control of 3D-printed guns.

By November 2024, 15 U.S. states had established regulations on ghost guns, though exact requirements vary. The rules typically require a serial number, background checks for firearm component purchases and reporting to authorities that a person is producing 3D-printed guns.

For instance, in New Jersey, a 2019 law mandates that all ghost guns have a serial number and be registered. Under current New York law, possession or distribution of a 3D-printed gun is classified as a misdemeanor. However, a proposed law seeks to elevate the manufacturing of firearms using 3D-printing technology to a felony offense.

As technology advances and rules evolve, criminals who use 3D-printed firearms will continue to pose threats to public safety and security, and governments will continue playing catch-up to effectively regulate these weapons.

Nir Kshetri, Professor of Management, University of North Carolina – Greensboro

This article is republished from The Conversation under a Creative Commons license. Read the original article.

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health and wellness

Zepbound Linked to Lower Healthcare Costs in Adults 55+ With Obesity, Real-World Study Suggests

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A real-world study found sustained Zepbound use in adults 55+ with obesity was linked to lower healthcare costs and fewer hospital and ER visits over time.

A new real-world study of adults over age 55 with overweight or obesity found that sustained use of Zepbound (tirzepatide) for weight management was associated with lower healthcare costs over time compared with similar adults who were not treated. Eli Lilly and Company said the findings were driven in part by lower rates of hospital admissions and emergency department visits, and were published in Diabetes, Obesity and Metabolism.

What the study found

According to Lilly, researchers estimated healthcare cost differences over time (excluding the cost of Zepbound itself) using two established analytic methods. Across both approaches, monthly healthcare costs were lower, on average, among older adults who stayed on Zepbound.

Key estimates reported in the release include:

  • At six months: costs were up to 15% lower (up to $181 per patient, per month).
  • At 12 months: the estimated difference widened to as much as $607 per patient, per month, reflecting up to 38% lower costs than those not treated (estimates varied by model).

In the primary analysis, adults over 55 treated with Zepbound had lower rates of hospital admissions and emergency department visits across every follow-up period, along with numerically higher rates of routine outpatient and office visitsa pattern the company said was consistent with greater engagement in routine care.

Why Medicare is part of the conversation

Lilly said the cost findings may be relevant for older adults, including those in Medicares GLP-1 Bridge program. The company noted that beginning at six months, estimated healthcare savings nearly covered the programs monthly treatment cost of $195 per patient, per month, and by 12 months the estimated savings exceeded the reported monthly treatment cost.

Its important to note the release also emphasizes a limitation: claims data do not capture Zepbounds net price, and the study excluded the cost of Zepbound from total treatment costs. That means the reported differences reflect potential savings elsewhere in care that could offset treatment costs, not the full net cost impact.

Who was included in the analysis

The retrospective observational cohort study used Komodos Healthcare Map, a database of de-identified claims data from more than 330 million individuals enrolled in U.S. healthcare plans. The analysis included 15,843 adults over age 55 (mean age 64.5) with obesity or overweight plus at least one obesity-related complication who initiated Zepbound between November 2023 and September 2025. Each Zepbound user was matched 1:1 with a control participant who met the same eligibility criteria but did not initiate GLP-1 or GIP/GLP-1 receptor agonist medication.

What Zepbound is

Zepbound (tirzepatide) is a dual GIP and GLP-1 receptor agonist indicated for adults with obesity, or some adults with overweight who also have at least one weight-related medical problem, to lose weight and keep it off. Lilly also noted Zepbound is FDA-approved to treat adults with moderate-to-severe obstructive sleep apnea and obesity, and should be used alongside a reduced-calorie diet and increased physical activity.

Safety summary (high level)

The release includes an indications and safety summary with warnings. Among other risks, Lilly notes Zepbound carries a warning about thyroid tumors, including thyroid cancer, and may cause serious side effects such as severe stomach problems, dehydration leading to kidney problems, gallbladder problems, pancreatitis, serious allergic reactions, and low blood sugar (especially when used with certain diabetes medicines). Patients should talk with a healthcare provider about risks and whether the medication is appropriate for them.

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Source

  • PRNewswire / Eli Lilly and Company press release (Aug. 26, 2026): Zepbound linked to lower healthcare costs in adults over age 55 with obesity according to a real-world study

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Economy

U.S. Consumer Confidence Slips as Americans Grow More Cautious About the Future

U.S. consumer confidence edged lower in August as Americans became more pessimistic about jobs, income and business conditions over the next six months, despite improved views of the current economy.

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NEW YORK — U.S. consumer confidence edged lower in August as Americans expressed greater concern about future business conditions, jobs and household income, even as their assessment of the current economy improved.

U.S. consumer confidence slipped in August 2026 as Americans grew more concerned about jobs, income and future business conditions.

The Conference Board reported that its Consumer Confidence Index fell 0.8 points to 89.4 in August, down from 90.2 in July.

The relatively small decline, however, masks a widening gap between how consumers view conditions today and what they expect in the months ahead.

The Present Situation Index, which measures consumers’ assessment of current business and labor market conditions, climbed 6.8 points to 121.2, reversing three consecutive months of declines.

Meanwhile, the Expectations Index, which measures the short-term outlook for income, business and employment conditions, dropped 5.8 points to 68.2.

“Consumer confidence moderated slightly in August for a second consecutive month,” Dana M. Peterson, chief economist at The Conference Board, said in the organization’s Aug. 25 release.

Jobs Look Better Today — But Consumers Worry About Tomorrow

Americans’ perceptions of the current labor market improved considerably during August. About 27% said jobs were plentiful, up from 24.4% in July, while 19.5% said jobs were hard to get, down from 21.7%.

The outlook for the next six months was considerably weaker.

Only 14.6% expected more jobs to become available, compared with 16.4% in July. At the same time, 26.1% expected fewer jobs.

Consumers were also less optimistic about their incomes. About 17.6% expected their income to increase, down from 19.5% in July, while 13.8% expected their income to decline.

Prices Remain on Consumers’ Minds

Inflation continues to influence how Americans feel about the economy. According to The Conference Board, consumers’ written responses frequently mentioned prices, oil and gasoline, food and groceries, trade, jobs, and war or conflict.

Average and median expectations for inflation over the next 12 months also increased slightly.

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Interest rates remain another concern. More than six in 10 consumers — 61.3% — expected interest rates to rise over the next year, although that was slightly lower than the 62% recorded in July.

Consumers Are Still Planning to Spend

The softer outlook hasn’t eliminated Americans’ willingness to make purchases.

Auto-buying expectations remained strong on a six-month moving-average basis, while homebuying expectations declined slightly in August but remained on a longer-term upward trend after hitting decade lows in early 2024.

Restaurants, bars and takeout; utilities; and streaming, internet and mobile services ranked among consumers’ leading planned service expenses.

Consumers were less enthusiastic about discretionary activities including movies, personal-travel hotels, airfare, amusement parks, museums and historical sites.

Why It Matters

The August numbers paint a mixed picture of the American consumer.

People are seeing some improvement in the economy they are experiencing today, particularly in the labor market. But their expectations for the next six months are becoming noticeably more cautious.

That divide matters because consumer spending represents a major part of U.S. economic activity. If concerns about employment, inflation and household income begin translating into reduced spending, weakening confidence could eventually become more significant for the broader economy.

For now, the August survey suggests Americans haven’t stopped spending — but they’re increasingly keeping an eye on what may be coming next.

The preliminary August Consumer Confidence Survey was conducted online for The Conference Board by Toluna. The survey period was Aug. 3–16, 2026.

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Source: The Conference Board, August 2026 Consumer Confidence Survey®, released Aug. 25, 2026.

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Lifestyle

California and Minnesota Face $1B Medicaid Funding Hold

The Trump administration is withholding more than $1 billion in Medicaid funding from California and Minnesota over disputed medical claims. A social-policy historian examines how concerns about fraud have historically been used to justify funding cuts and undermine public confidence in Medicaid.

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Agents, many wearing jackets or vests emblazoned with 'FBI,' exit a building with what appears to be a trove of documents.Medicaid Funding.
Federal agents execute a search in December 2025 tied to potential Medicaid fraud in Bloomington, Minn. Christopher Juhn/Anadolu via Getty Images

Ben Zdencanovic, University of Cambridge

California and Minnesota Face $1B Medicaid Funding Hold

The Trump administration announced on July 21, 2026, that it’s withholding US$867 million in federal healthcare funding for California and $200 million for Minnesota – a total of more than $1 billion.

Federal officials said the two states had failed to provide sufficient evidence that a number of disputed medical claims were legitimate. These include bills for in-home care and other services covered by the two states’ Medicaid programs for low-income residents.

Medicaid administrators say the funds can be recovered if the states supply the requested documentation. But the action is highly unusual: Typically, Medicaid officials partner with states to conduct an audit when they suspect fraud, a careful process that often takes years.

It’s the second time in 2026 that the Trump administration has withheld or deferred federal Medicaid funds for several states, including California and Minnesota, because of alleged fraud and abuse. The Democratic governors of those states have called the decision a politically motivated attack on their constituents.

I’m a historian of social policy who led the first comprehensive historical overview of Medi-Cal, California’s statewide Medicaid system. I’ve found that U.S. leaders have long used the language of fraud and abuse to blur the line between correcting very real failures within Medicaid and – as I believe the Trump administration is currently doing – discrediting and defunding the program itself.

Who pays when Medicaid is cut? It affects children’s health care, nursing home care, disability services and health insurance.

Slashing the safety net

The Medicaid restrictions are part of the Trump administration’s overall efforts to slash federal funding for the safety net.

The large tax-and-spending bill that Trump signed into law in July 2025 as the cornerstone of his second-term agenda pared eligibility for Medicaid by introducing work requirements for some adults. It is cutting close to $1 trillion in federal spending on the program over the next decade.

Researchers estimate that almost 12 million people, on top of the estimated 28 million without health insurance in 2025, could become uninsured by 2034 due to these changes. By mid-2026, more than 3 million people had already lost their insurance coverage due to Republican changes to the Affordable Care Act.

‘Padlocking’ the ‘cookie jar’

In February 2026, Vice President JD Vance, Health Secretary Robert F. Kennedy Jr. and Dr. Mehmet Oz, the administrator of the Centers for Medicare & Medicaid Services, or CMS, announced a new anti-fraud initiative called Comprehensive Regulations to Uncover Suspicious Healthcare.

Also known by its rather unsubtle acronym, CRUSH, this initiative is taking unprecedented steps to withhold and defer funds in response to suspected fraud. “CMS is done trying to catch fraudsters with their hands in the cookie jar,” Oz said in announcing CRUSH’s formation. “Instead, we’re padlocking the jar and letting them starve.”

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To be sure, Medicaid fraud, waste and abuse – such as providers billing Medicaid for services that are unnecessary or never rendered – are very real problems that cost taxpayers billions of dollars annually. They do divert funds from the low-income and disabled Americans enrolled in the program.

But the Trump administration’s latest moves are part of a much broader history of weaponizing Medicaid fraud and abuse – both real and imagined. I see them as a politicized attempt to prove that Medicaid itself is wasteful, that state governments cannot be trusted to administer federal money, and that public benefits inevitably invite dishonesty.

Robert F. Kennedy Jr. points to a chart pertaining to Medicaid fraud.
Secretary of Health and Human Services Robert F. Kennedy Jr. speaks about alleged Medicaid fraud and charges in Minneapolis in May 2026. Christopher Juhn/Anadolu via Getty Images

Providing little oversight at the start

Medicaid was established, along with Medicare for older adults, in 1965 as part of President Lyndon B. Johnson’s “Great Society” reforms. Despite providing millions of Americans with health insurance coverage for the first time, these programs had few centralized mechanisms for the kind of federal oversight that could prevent and catch fraud and abuse.

And the sheer scale and complexity of the Medicaid system – joint federal-state funding, varying eligibility requirements, millions of enrollees and thousands of providers – created opportunities for questionable billing practices among providers.

The 1970s saw a number of highly publicized Medicaid scandals involving nursing homes, laboratories, pharmacies and so-called “Medicaid mills” – healthcare providers that sought to bill the government for large numbers of Medicaid patients for shoddy and often fraudulent care.

A series of high-profile congressional investigations spurred demand for stronger Medicaid oversight and enforcement. That led to the Medicare-Medicaid Anti-Fraud and Abuse Amendments of 1977, which established the national Medicaid Fraud Control Units program.

The state-run Medicaid Fraud Control Units received generous federal matching funds to investigate and prosecute fraud.

The most serious Medicaid fraud was generally committed by healthcare providers and contractors, not patients. Medicaid Fraud Control Units were principally responsible for investigating providers, while also prosecuting the abuse and neglect of patients whose care was billed to Medicaid.

At the same time, however, Medicaid was becoming entangled in a broader political debate over social spending, whether many Americans were becoming too dependent on government benefits, and the alleged use of benefits by people who should not have received them. In the 1980s and 1990s, widely circulated stories about Medicaid exposed fraud and malfeasance by providers.

But disproportionately, they also highlighted the comparatively few instances of fraud by people enrolled in the program, such as cases where they submitted false receipts for covered medically related travel or sold drugs they obtained through Medicaid for free or at low cost.

Using Medicare fraud to justify spending cuts

The distinction between Medicaid and cash assistance programs, such as the Aid to Families with Dependent Children “welfare” program, frequently disappeared in political rhetoric. False or exaggerated stories that portrayed African American single mothers living extravagantly while fraudulently claiming welfare benefits became potent symbols of supposed government failure.

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While campaigning as a presidential candidate, Ronald Reagan seized on this trope of the “welfare queen” in his attacks on social spending.

A large crowd of people wait on lines in a black and white photo from the 1970s.
People line up at the Baltimore City Welfare Office in 1975, years before concerns about social spending led to big cuts to safety net programs. O’Halloran/Library of Congress via Getty Images

By the mid-1990s, opposition to welfare programs had become increasingly bipartisan. Politicians in both parties often used tales of Medicaid fraud on the part of providers and recipients to justify tighter eligibility rules and spending cuts.

Federal oversight expanded further with the Deficit Reduction Act of 2005, which created the Medicaid Integrity Program and strengthened federal oversight of state programs. The Affordable Care Act, the landmark healthcare legislation Congress passed in 2010, added new measures to screen providers and verify billing.

Concerns about Medicaid’s “integrity” became highly politicized in the debates surrounding the ACA. Critics of Medicaid expansion argued that increasing the number of people who could get health insurance through the program would increase fraud and improper enrollment. Supporters of expanding Medicaid to help more Americans gain health insurance maintained that anti-fraud rhetoric often disguised ideological opposition to the program’s expansion.

Blurring distinctions then and now

For the six decades that this program has helped millions of low-income Americans get healthcare, politicians have blurred the distinction between protecting Medicaid from abuse and using abuse to discredit Medicaid itself.

In my view, the Trump administration’s campaigns against California and Minnesota continue that pattern. It is using real weaknesses within Medicaid to advance much broader political arguments: that Democratic states cannot be trusted, that public benefits naturally invite abuse, and that withholding funds is itself a form of reform.

The result will no doubt be that fewer low-income Americans will be able to get the healthcare they need.

Ben Zdencanovic, Assistant Professor of U.S. History, University of Cambridge

This article is republished from The Conversation under a Creative Commons license. Read the original article.

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