NEW YORK (AP) — A monthslong calm on Wall Street shattered on Friday, and U.S. stocks are falling after President Donald Trump threatened to crank tariffs much higher on China.

The S&P 500 sank 2.1% and was tumbling toward its worst day since April. The Dow Jones Industrial Average was down 668 points, or 1.4%, with an hour remaining in trading, and the Nasdaq composite was 2.8% lower.

See Full Page