The Bush administration pledged to mount a legal challenge after a federal judge struck down a program that secretly intercepts the international phone calls and e-mails of thousands of people in the United States in the pursuit of terrorism suspects. Legal experts called the decision a major setback for Bush. \"It\'s a complete defeat for the Bush administration,\" said Robert Sedler, Wayne State University constitutional law professor. \"Virtually every argument they made was rejected.\" But he and others said Taylor\'s decision may face a chilly reception from the conservative U.S. 6th Circuit. No matter how the appeals court rules, Sedler said, the case is destined for the U.S. Supreme Court. He said both sides would ask the 6th Circuit to expedite its decision.