Tuesday , Sen. Charles Grassley , R-Iowa , sent a letter to Holder demanding to know who at the Justice Department was aware of a Bureau of Alcohol , Tobacco , Firearms and Explosives memo on questionable tactics , which was forwarded to ATF headquarters and possibly to the Justice Department one day before Justice sent a faulty letter to Grassley denying any `` gunwalking . '' Bush : ` ` We must respond appropriately , '' says a Justice Department official . Sen. Grassley 's campaign demands answers from Attorney General Holder . At issue is a February 2011 memo that includes a DOJ letter to Sen .
Bush : ` ` We must respond appropriately , '' says a Justice Department official . Sen. Grassley 's campaign demands answers from Attorney General Holder . At issue is a February 2011 memo that includes a DOJ letter to Sen .