WASHINGTON - NASCAR Cup champion Tony Stewart has had such a successful racing career that he's becoming a regular at the White House. Stewart said President Bush recalled his two previous visits to the Oval Office — one for his first Cup championship and another with other top drivers — when he came in for a third on Tuesday. "It's a real big honor to be able to come here and have the president remember you," Stewart told reporters as he left the West Wing. "He said, `I'd like to see you back here next year.' So I'm definitely on...