U.S. stocks drop on concerns over trade tensions

NEW YORK, May 6 (Xinhua) -- U.S. stocks closed lower on Tuesday as investors sifted through a wave of corporate earnings while looking ahead to developments on trade talks and the outcome of the Federal Reserve's two-day policy meeting, which began earlier in the day. The Dow Jones Industrial Average fell 389.83 points, or 0.95 percent, to 40,829.00. The S&P 500 dropped 43.47 points, or 0.77 percent, to 5,606.91, while the Nasdaq Composite...