Dow futures drop 250 points and Treasury yields jump after Moody’s downgrades U.S. debt

• Stock futures pointed lower on Sunday evening as investors weighed fresh warnings on U.S. debt and the potential for President Donald Trump's trade war to heat up again. Late Friday, Moody's downgraded the U.S. credit rating one notch. That came as Congress tries to extend Trump's tax cuts and add new ones, which are expected to deepen federal deficits.

U.S. stocks signaled a retreat on Sunday night as investors weighed fresh warnings on U.S. debt and the potential for President...