On February 4, 2011 the Office of the Deputy Attorney General, the US Attorney's Office in Phoenix, and ATF Headquarters,<ref>Department of Justice Inspector General report</ref> Ronald Weich sends a response to Sen. Grassley regarding his two January letters. Weich said claims "...that (the) ATF ‘sanctioned’ or otherwise knowingly allowed the sale of assault weapons to a straw purchaser who then transported them to Mexico [are] false. ATF makes every effort to interdict weapons that have been purchased illegally and prevent their transportation to Mexico.”<ref name=bloom120211>{{cite news |last=Salant |first=Jonathan |title=Erroneous Gun Letter Based on U.S. Attorney, Documents Show |url=https://www.bloomberg.com/news/2011-12-02/erroneous-gun-letter-based-on-u-s-attorney-documents-show.html |publisher=Bloomberg |accessdate=|date=}}</ref><ref name=weich020411>{{cite web|last=Weich |first=Ronald |title=Letter dated February 4, 2011, from U.S. Department of Justice to Senator Charles E. Grassley |url=http://www.grassley.senate.gov/about/upload/Judiciary-ATF-02-04-11-letter-from-DOJ-deny-allegations.pdf |publisher=United States Senate |accessdate=|format=PDF |archive-url=https://web.archive.org/web/20110508031440/http://grassley.senate.gov/about/upload/Judiciary-ATF-02-04-11-letter-from-DOJ-deny-allegations.pdf |archive-date=May 8, 2011 |dead-url=yes |df=mdy }}</ref> | On February 4, 2011 the Office of the Deputy Attorney General, the US Attorney's Office in Phoenix, and ATF Headquarters,<ref>Department of Justice Inspector General report</ref> Ronald Weich sends a response to Sen. Grassley regarding his two January letters. Weich said claims "...that (the) ATF ‘sanctioned’ or otherwise knowingly allowed the sale of assault weapons to a straw purchaser who then transported them to Mexico [are] false. ATF makes every effort to interdict weapons that have been purchased illegally and prevent their transportation to Mexico.”<ref name=bloom120211>{{cite news |last=Salant |first=Jonathan |title=Erroneous Gun Letter Based on U.S. Attorney, Documents Show |url=https://www.bloomberg.com/news/2011-12-02/erroneous-gun-letter-based-on-u-s-attorney-documents-show.html |publisher=Bloomberg |accessdate=|date=}}</ref><ref name=weich020411>{{cite web|last=Weich |first=Ronald |title=Letter dated February 4, 2011, from U.S. Department of Justice to Senator Charles E. Grassley |url=http://www.grassley.senate.gov/about/upload/Judiciary-ATF-02-04-11-letter-from-DOJ-deny-allegations.pdf |publisher=United States Senate |accessdate=|format=PDF |archive-url=https://web.archive.org/web/20110508031440/http://grassley.senate.gov/about/upload/Judiciary-ATF-02-04-11-letter-from-DOJ-deny-allegations.pdf |archive-date=May 8, 2011 |dead-url=yes |df=mdy }}</ref> |