Lance Armstrong has asked a federal judge to end a lawsuit against him by the U.S. government that seeks to recover millions of dollars in sponsorship money the U.S. Postal Service paid to his cycling teams. Armstrong's motion for summary judgment filed Wednesday in federal court in Washington says the case against him is ''long on speculation and hyperbole-but short on evidence and viable legal theories.'' The lawsuit alleges violations of the federal False Claims Act. It was initially filed by Armstrong's former teammate Floyd Landis. More...