Dow Jones futures fell Monday morning, along with S&P 500 futures and Nasdaq futures after Moody's downgraded the U.S. sovereign debt rating on Friday.The stock market rally had a powerful week as the U.

U.S. stock futures point to a lower open after Moody's stripped the U.S. of its top credit rating. Moodys cut its credit rating on Friday a notch to Aa1 from Aaa due to likely difficulty financng the federal government’s growing budget deficit and the ramifications of rolling over existing U.