sentences:  Project Gunrunner was one such efforts between the U.S. and Mexico to collaborate in tracing Mexican guns which were manufactured in or imported legally to the U.S.In 2008, it was reported that 90% of arms either captured in Mexico or interdicted were from the United States.However, the U.S. Department of Homeland Security and others have dispelled these claims, pointing that the Mexican sample submitted for ATF tracing is the fraction of weapons seized that appear to have been made in the U.S. or imported into the U.S.