A bipartisan group of 20 former U.S. Attorneys is backing the House of Representatives in its legal battle with the Bush administration over subpoena power in the congressional investigation into the firings of nine U.S. Attorneys.

The House filed suit in March challenging President George W. Bush’s assertion of executive privilege to shield his chief of staff Joshua Bolten and ex-White House counsel Harriet Miers from supplying Congress with testimony and records related to the firings.