sentences:  Solicitor General Paul D. Clement allotted 15 minutes to present the federal government's views.During the argument, however, extra time was extended to the parties, and the argument ran 23 minutes over the allotted time.Walter E. Dellinger of the law firm O'Melveny & Myers, also a professor at Duke University Law School and former Acting Solicitor General, argued the District's side before the Supreme Court.