Gun shops in Arizona considered that one person was buying too many AK-47s and something was wrong. After reporting this to the ATF, they were told to stay the course and continue selling to them while they were being monitored. The tactic is called Walking guns. The Democrats in office would have you believe that it is the American Citizen that is putting guns in the hands of criminals. The ATF allowed this one person to buy 2500+ weapons. Two of them were found at the site where border patrol agent Bryan Terry was gunned down by Mexican drug runners. CBS report on ATF failures