(CNBC) U.S. stock index futures fell in overnight trading after the House passed a $2.2 trillion coronavirus stimulus plan on Thursday night, despite Democrats and the Trump administration remaining divided on key items in the legislation. Futures tied to the Dow Jones Industrial Average slid 68 points, pointing to a 72-point loss at the open on Friday. S&P 500 futures fell 0.22%, while Nasdaq 100 futures declined