Wall Street opens lower amid U.S.-China trade war

U.S. stocks are shaky Friday as Wall Street's monstrous week heads toward its close, while the rising price of gold, falling value of the U.S. dollar and moves in other financial markets indicate more fear as U.S. President Donald Trump's trade war with China escalates even further. The S&P 500 was down 0.4% in early trading. It's coming off a sharp slide that erased a big chunk of its historic gains from the middle of the week, which came after Trump paused tariffs on many countries outside of China. The Dow Jones Industrial Average was down 232 points, or 0.6%,…