Seats are laid out for members of Congress at a hearing room on Capitol Hill in Washington, September 10, 2007, where the U.S. military commander in Iraq, General David Petraeus and U.S. Ambassador to Iraq Ryan Crocker are to expected to report on military progess in Iraq. In the report considered crucial to U.S. strategy in the highly unpopular war in Iraq, Petraeus is expected to tell Congress on Monday that U.S. troop levels should not be cut deeply.