US Attorney General Eric Holder is feeling the heat over Fast & Furious. His department oversaw a vast gunrunning operation that sent thousands of firearms to Mexican drug cartels. Two members of Americans law enforcement have been murdered with these guns. The Mexican government estimates that over two hundred Mexican citizens, including many law enforcement officers, have been murdered with these weapons.
The operation violated US law, Mexican law, and international treaties between the US and Mexico.
The Wall Street Journal even accused the DOJ of facilitating the sale of fragmentation grenades to Mexican drug cartels. They base they claim on Internet DOJ documents that have been released.