Breitbart writes, Attorney General Eric Holder defended President Obama's gun-control agenda to a meeting of states' attorney generals on Tuesday. The U.S. Attorney General explained to the AGs that Obama's gun control measures "would not infringe on the rights of lawful gun owners." Constitutional expert Holder's DOJ oversaw project Fast and Furious, which was responsible for selling untraceable firearms to Mexican narco-terrorists. We will not rest until we’ve done everything in our power to prevent future tragedies like the one that killed Brian Terry took place at Sandy Hook Elementary School,”…