Fitch Ratings on Tuesday affirmed the United States at 'AAA' with a stable outlook. The ratings firm said the "key pillars of (the) U.S.'s exceptional creditworthiness remain intact." Stock futures are still pointing to a lower open, but the losses were cut after the news was released. More headlines from FoxBusiness.com:http://email.foxnews.com/t?ctl=12D77:7469D46E31DAE9CA8E31E295BCC9B610&------