Peace activist Sheehan taken into custody in Conyers' office 7/24/2007, 8:05 a.m. EDT By NATASHA T. METZLER The Associated Press WASHINGTON (AP) — Anti-war activist Cindy Sheehan was arrested at the Capitol for disorderly conduct, shortly after saying she would run against House Speaker Nancy Pelosi over the California Democrat's refusal to try to impeach President Bush. Sheehan on Monday was taken into custody inside Rep. John Conyers' office, where she had spent an hour imploring him to launch impeachment proceedings against Bush and Vice President Dick Cheney. Conyers, D-Mich., chairs the House Judiciary Committee, where any impeachment effort would...