The Obama administration is considering several steps that would review the legality of the controversial Bowl Championship Series, the Justice Department said in a letter Friday to a senator who had asked for an antitrust review. In the letter to Sen. Orrin Hatch, obtained by The Associated Press, Assistant Attorney General Ronald Weich wrote that the Justice Department is reviewing Hatch's request and other materials to determine whether to open an investigation into whether the BCS violates antitrust laws.