U .S. stocks closed markedly lower on Friday, a day after President Donald Trump signed an executive order slapping new tariffs on dozens of countries. A weak jobs report worsened investor jitters, revealing a slowdown of hiring over recent months as Trump's previous tariffs took hold.

President Donald Trump fired an official in charge of compiling basic statistics about the U.S. economy on Friday after revised data showed higher unemployment in May and June, falsely claiming the numbers were “faked.