US: Mexico Seized 68,000 Guns From US Since 2006 The government said Thursday that 68,000 guns recovered by Mexican authorities in the past five years have been traced back to the United States. The flood of tens of thousands of weapons underscores complaints from Mexico that the U.S. is responsible for arming the drug cartels plaguing its southern neighbor. Six years of violence between warring cartels have killed more than 47,000 people in Mexico. The Bureau of Alcohol, Tobacco, Firearms and Explosives released its latest data covering 2007 through 2011. According to ATF, many of the guns seized in Mexico and submitted to ATF for tracing were recovered at the scenes of cartel shootings while others were seized in raids on illegal arms caches. All the recovered weapons were suspected of being used in crimes in Mexico. At an April 2 North American summit in Washington, Mexican President Felipe Calderon said the U.S. government has not done enough to stop the flow of assault weapons and other guns from the U.S. to Mexico. Calderon credited President Barack Obama with making an effort to reduce the gun traffic, but said Obama faces "internal problems ... from a political point of view." There is Republican opposition in Congress and broad opposition from Republicans and gun-rights advocates elsewhere to a new assault weapons ban or other curbs on gun sales. The Obama administration says it is working to tighten inspections of border checkpoints in the absence of an assault rifle ban that expired before Obama took office. FILE - In this April 2, 2012 file photo, Mexican President Felipe Calderon participates in a joint news conference with President Barack Obama and Canadian Prime Minister Stephen Harper, in the Rose Garden at the White House in Washington. (AP Photo/Carolyn Kaster, File) Close For more than a year, ATF has been reeling from accusations that some of its agents in Arizona were ordered by superiors to step aside rather than intercept illicit loads of weapons headed for Mexico. The Justice Department's inspector general and Congress have been looking into the Arizona gun probe, Operation Fast and Furious. The issue of gun control legislation hasn't been part of the Republican-led probe of Fast and Furious by the House Oversight and Government Reform Committee. The number of all types of ATF-traced firearms manufactured in the U.S. or imported into the U.S. and later recovered in Mexico rose from 11,842 in 2007 to 14,504 in 2011, according to ATF. The figures for U.S.-sourced firearms were 21,035 in 2008; 14,376 for 2009; and 6,404 in 2010. Included in those totals, the number of rifles recovered in Mexico, submitted to ATF for tracing and found to have come from the U.S. rose from 4,885 in 2007 to 8,804 last year. Mexico has provided ATF information on 99,691 guns. ATF determined that the source for 68,161 of the weapons was the U.S, 68 percent of the total. For the remainder, ATF was unable to determine a U.S. source or was unable to trace the request to a country of origin. The 68 percent figure is down from estimates of 90 percent in years past when Mexico was sharing less information with the U.S. The controversial tactic of "letting guns walk" out of gun shops in the hands of suspected straw purchasers was used in Operation Fast and Furious at ATF in Phoenix in an effort to track the guns to major weapons traffickers and drug cartels in order to make criminal cases against smuggling kingpins who had eluded prosecution for years. But the tracking of the weapons was faulty, and many of them wound up at crime scenes in Mexico and the U.S. Two of the guns spotted at one point during Fast and Furious were later discovered at the scene of the killing of U.S. border agent Brian Terry.