His promise of low corporate tax rates boosts investor confidence
                                
                                
                                    (Newser) -
                                    The dollar spiked, bitcoin hit a record high, and US stock futures soared early Wednesday at the prospect of  another Donald Trump presidency  and a possible red sweep of Congress. Futures on the Dow Jones Industrial Average soared 1,254 points, or about 2.9%. The last time the Dow...