President-elect Barack Obama said Monday that an internal investigation shows his staff had no involvement in the corruption scandal enveloping Illinois' governor, as lawmakers took the first step toward removing the state's scandal-plagued leader from office. Responding to the controversy sparked by the arrest of Gov. Rod Blagojevich's alleged attempt to sell Obama's vacant Senate seat, the president-elect pledged to make the review public, but said he was holding off because prosecutors asked for a delay. U.S. Attorney Patrick Fitzgerald released a statement confirming the request. At a press conference in Washington to announce his new environmental team, Obama called the corruption charges against the governor an "appalling set of circumstances," but said they had nothing to do with his own office. There are no suggestions that Obama or his aides were involved in the alleged sale of his seat, but the scandal could prove to be a headache for him as he prepares to take over the presidency on Jan. 20.