NEW YORK (AP) — The U.S. stock market is falling further Tuesday following President Donald Trump’s latest escalation in his trade war, briefly pulling Wall Street 10% below its record set just a few weeks ago. The S&P 500 was down 0.6% in afternoon trading after Trump said he would double planned tariff increases on steel and aluminum coming from Canada. The president said it was a response to moves a Canadian province made after Trump began threatening tariffs on one of the United States' most important trading partners. The Dow Jones Industrial Average was down 462 points, or 1.1%,…