SHEEHAN V. PELOSI. Speaking of impeachment, Cindy Sheehan, the antiwar activist and mother of an American soldier killed in Iraq, says that unless Nancy Pelosi files articles of impeachment against George W. Bush, she will run against her for Congress in 2008. Guess Sheehan isn't out of the movement afterall. Sheehan is a master of political theater -- one of the only ones we have. But the question is, is she effective? --Dana Goldstein