US stock futures slipped Wednesday, as investors reconsidered hawkish comments from Federal Reserve Chairman Jerome Powell. S&P 500 futures ES00 fell 0.4% to 4,065.75 Dow Jones Industrial Average futures YM00 fell 104 points, or 0.3%, to 32,478 Nadsaq 100 futures fell 0.8%, to 12,461 On Tuesday, the Dow industrials DJIA jumped 431.17 points, or 1.3%…