The White House has escalated the administration's clash with Congress over the so-called "Fast and Furious" scandal, in which the Justice Department lost track of weapons that turned up in Mexico. When Attorney General Eric Holder appeared again today before the House Oversight Committee, Republicans renewed their threat to hold him in contempt for refusing to turn over some documents. In response, the President today asserted "Executive Privilege." David Mark is senior editor for Politico.
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