Allawi Touts Iraq Progress, Thanks U.S. WASHINGTON - Offering a simple, "Thank you America," Iraqi interim Prime Minister Ayad Allawi declared Thursday that his country is succeeding in its effort to move past the war that ousted Saddam Hussein.    In an appearance that President Bush's advisers hoped would ease American voters' doubts about the troubled campaign in Iraq, Allawi told a joint meeting of Congress that despite struggles and setbacks, "the values of liberty and democracy" are taking hold there...