The harshly disputed claim that 90% of the guns in Mexico used in crimes come from the US has been replaced by the much more scientific 70%.
Whatever the truth may be I would point out that of those 70% thousands can likely be traced directly back to the ATF letting them across the border.
http://online.wsj.com/article/SB10001424052702304259304576375961350290734.html?mod=ITP_pageone_1
If you look at the chart you can see that they were either "manufactured in the US or imported in to the US". It does not say how many were "Sold in the US". I only point this out because they very well could have been given to the Mexican Government by the US government and then sold to drug dealers by government officials.
Much more at Link
Whatever the truth may be I would point out that of those 70% thousands can likely be traced directly back to the ATF letting them across the border.
http://online.wsj.com/article/SB10001424052702304259304576375961350290734.html?mod=ITP_pageone_1
If you look at the chart you can see that they were either "manufactured in the US or imported in to the US". It does not say how many were "Sold in the US". I only point this out because they very well could have been given to the Mexican Government by the US government and then sold to drug dealers by government officials.
The ATF figures show that 21,313 firearms recovered in Mexico in 2009 were submitted for tracing by the agency. Of these, 10,945 were manufactured in the U.S. and 3,268 were imported into the U.S. from third countries before ending up in Mexico. The origin of 7,100 firearms couldn't be determined.
Of 7,971 firearms recovered in Mexico in 2010 and traced by ATF, 4,186 were manufactured in the U.S. and 2,105 were imported into the U.S. The origin of 1,680 firearms couldn't be determined.
Collectively, the data show that of the 29,284 firearms recovered in Mexico in 2009 and 2010 and submitted to the ATF for tracing, 20,504 or 70% passed through the U.S. at some point. The period is the most recent for which data are available.
The ATF said it traced the guns based on information provided by Mexican authorities. The Mexican government doesn't submit every firearm it recovers for tracing.
Much more at Link