By John Lindsay-Poland. Cleary Gottlieb Steen & Hamilton and Giffords  

  The iron river of weapons transiting from the United States to Mexico and Central America that empowers criminal organizations and accelerates forced migration originates from hundreds of gun manufacturers and passes through thousands of local U.S. gun dealers, every year. In reaction to the flow of illicit weapons, a firearms race has developed, in which gun companies export more and increasingly militarized weapons to Mexican police and military forces. But the number of lives lost or disappeared through violence in Mexico continues to increase, while migrants fleeing through Mexico have become understandably more desperate to get to safety. Political discourse focuses on the U.S.-Mexico border. But the unregulated, massive and militarized U.S. gun market that feeds the violence, drug trafficking, and displacement is growing – and often ignored. The Stop US Arms to Mexico project obtained finely grained data, never before disclosed, on the origins of guns trafficked and exported to Mexico and Central America from the United States since 2015. We are publishing this data, in conjunction with this report, at stopusarmstomexico.org/iron-river  Gun violence in Mexico has spiraled in the last two decades since the expiration of the U.S. federal assault weapons ban in 2004 and the 2007 declaration of the drug war in Mexico with U.S. support. A modest decline in gun homicides since 2019 has not reduced violence even to the elevated levels of 2010-2011. Moreover, the growing number of forced disappearances, primarily carried out by criminal organizations armed with U.S. weapons and sometimes with collusion of Mexican security forces, has nullified the modest decline in gun homicides

San Francisco, CA:  Stop US Arms to Mexico, 2024. 12p.

By John Lindsay-Poland

The U.S. firearms market is generating growing storms of violence in neighboring countries. From Mexico – where traffickers in fentanyl and other criminal businesses are armed with thousands of U.S.- sourced assault weapons and .50 caliber rifles – to Haiti, where gangs armed with rifles easily purchased and smuggled from Florida and Georgia dominate and terrorize broad swaths of territory – the permissive, militarized and enormous gun trade in the United States is driving thousands of families to flee their homelands, arming the men who disappear people and commit femicide, empowering traders in narcotics that take thousands more lives, and looting economies. The damage is not limited to Mexico and Haiti. Firearms homicides – just one indicator of gun harms – have grown in Jamaica, Barbados, Central America and other nations, in tandem with the retail proliferation of U.S. weapons. In Guatemala, the exponential growth of exports of U.S. pistols has fed weapons trafficking and homicide rates. The United States is not exempt, of course: there were more shootings in U.S. schools in the last three years than any prior year.1 The concept frequently used for this violence is that of a pandemic: the health consequences of gun violence are severe and growing, with firearms and bullets as vectors and agents, respectively.2 But gun violence also behaves like a storm system in its violence and shattering effects. And the islands in which people may imagine that they are safe from these storms of gun violence are shrinking.

San Francisco, CA Stop US Arms to Mexico, 2025. 9p

By William R. Slomanson

An estimated quarter- to half-million guns are smuggled from the U.S. into Mexico each year. Seventy percent of guns recovered at Mexican crime scenes are traced back to the U.S. Many of these weapons are military-styled assault rifles, shipped into Mexico by U.S. drug gangs. This pipeline endangers citizens of the four U.S. border states, many of the nation’s counties, and the police who are outgunned by cartels. According to the complaint, 'tens of thousands of Mexico’s citizens have been wounded and killed.'

The typical precursor is sloppy or illegal practices in the manufacturer-wholesaler-retailer-buyer distribution chain. Data available to the gun industry could be used by its members to substantially reduce sales of guns to 'bad apple' retailers.

Mexico’s unique law suit  is the first whereby a foreign government has sued American gun makers. If ultimately successful, the trial judge has hinted that this novel filing would encourage similar litigation−in the U.S. and other nations.

Estados Unidos Mexicanos is not a lawsuit against the Second Amendment. Mexico instead hopes to trigger an exception to the federal statute that generally bars such suits against the U.S. gun industry. The plaintiff relies on lower U.S. court cases that have either interpreted that immunity from suit−in a way that allows such suits to proceed−or have considered this federal statute unconstitutional.

Mexico filed in the U.S. for several presumptive reasons. It seeks stratospheric damages of 'billions of dollars each year'. A large recovery is more likely in an American court than in Mexico. Securing the appearance of these U.S. corporations in a Mexican venue would be beyond wishful thinking. Mexico’s other major hurdle is whether a U.S. court can exercise personal jurisdiction, when all of the alleged harm has occurred in Mexico.

The case is now in the trial court. After that result is appealed, and case-split certiorari is sought, the reviewing courts may dismiss this case because: (1) it does not trigger the key exception to federal immunity from suit; and/or (2) the court lacks personal jurisdiction over the non-resident defendants.

56 Suffolk University Law Review (forthcoming 2022), 35p.

By Kristen Rand. Additional research was provided by Kaya van der Horst

Fifty caliber sniper rifles are used by militaries around the world and can penetrate armor plating and shoot down aircraft on take-off and landing, but can be purchased under federal law in the U.S. as easily as a single-shot hunting rifle. The study’s release comes the day before the U.S Supreme Court will hear oral arguments by the government of Mexico in its lawsuit against gunmaker Smith & Wesson, another manufacturer of military bred weaponry utilized by the cartels.

VPC Government Affairs Director Kristen Rand states, “Fifty caliber sniper rifles are the guns most coveted by the cartels and most feared by Mexican law enforcement. The VPC has warned for years about the unique threat these anti-materiel guns present. Now they are being used to inflict maximum harm in Mexico. The U.S.-based manufacturers of these weapons must be held accountable.”

The VPC joined other gun violence prevention organizations in an amicus brief in support of the government of Mexico. The VPC has issued a wide range of studies on the threat posed by 50 caliber sniper rifles, including the risk they pose in the U.S. to infrastructure, civil aviation, and national security.

The study details the history of the Barrett, manufactured in Murfreesboro, Tennessee and the original 50 caliber sniper rifle, the gun’s unmatched combination of firepower and range, and the use of it and other 50 caliber rifles in numerous attacks and assassinations by Mexican cartels. Data contained in the study reveal that from 2010 to February 2023, the majority of 50 caliber sniper rifles (519 of 831) recovered by Mexican authorities were Barretts. Barrett and other 50 caliber sniper rifles have also been obtained by terrorists around the world, including Al Qaeda. In addition, the study:

• Cites numerous reports and research warning of the terror threat posed by the easy accessibility of 50 caliber sniper rifles, including: compromising command and control via assassination; the threat to aircraft (including civilian airliners); and, infrastructure.

• Offers numerous examples of terrorist and other criminal acts, including assassination, involving 50 caliber sniper rifles in Mexico, the U.S., and around the world.

• Details how the use of armor-piercing rifle rounds can further magnify the power – and the threat – of these deadly weapons.

• Includes profiles of companies manufacturing 50 caliber sniper rifles.

The study also puts forth policy recommendations including a federal ban in the United States of these uniquely destructive firearms.

Washington, DC: Violence Policy Center, 2025. 34p.

By Alexandra Punishill

Nowhere is the discussion surrounding gun violence more prominent than in the United States, with the impacts of our gun-friendly culture being felt around the world. This thesis analyzes the dynamics of gun trafficking from the United States to Mexico and sheds light on its role in fueling the epidemic of gun violence south of the border. It is argued that the particular system of federalism adopted by the United States has led to a variety of state-level gun regulations that have shaped domestic gun policy and have had an international impact. Despite Mexico’s persistent efforts to combat the gun violence orchestrated by powerful organized crime networks, success remains elusive. Central to this discourse is Mexico’s legal action against U.S. gun companies, signaling a significant shift in its approach to addressing the root causes of the crisis. However, it is argued that without substantive changes to gun laws in the United States, gun violence in Mexico will continue to have a devastating impact on both sides of the border.

Claremont McKenna College, CMC Senior Theses. 3577. 2024. 66p.