After weeks of struggling to choose a leader, Iraq's U.S.-picked interim government named its first president Wednesday - a Shiite Muslim from a party banned by Saddam Hussein. U.S. troops, meanwhile, pressed the hunt for the ousted dictator and officers said it was "just a matter of time" before he is caught. "He's going to start making mistakes, and we're going to catch him," a 4th Infantry Division spokeswoman, Maj. Josslyn Aberle, told The Associated Press in Tikrit, Saddam's hometown. In Washington, Defense Secretary Donald H. Rumsfeld said they were receiving lots of tips, but he acknowledged that you can't "know if you're closer until you catch him."