U.S. President Donald Trump on Friday threatened to impose a 100% tariff on all Chinese imports starting Nov. 1 or sooner, responding to Beijing’s new export controls on rare-earth materials. Trump accused China of taking an “extraordinarily aggressive position” and announced plans for new U.S. export controls on “any and all critical software.” He also said there was “no reason” to meet Chinese leader Xi Jinping at the upcoming APEC summit in Gyeongju, though later told reporters the meeting had not been canceled. The S&P 500 fell 2.7%on Friday, its sharpest drop since April, as investors priced in