NEW YORK (AP) — A manic day on Wall Street is sending the U.S. stock market careening, from a slight morning gain to a 10% drop from its record set last month and back again, following President Donald Trump’s latest escalation in his trade war. Such head-spinning moves are becoming routine following a scary ride for investors where the S&P 500 has swung by at least 1%, up or down, seven times in the last eight days. The heaves back and forth are a result of Wall Street’s uncertainty about how much pain Trump is willing for the economy to…