
Donald Trump's promised tariffs on Canada and Mexico won't go into effect until Saturday, but they're already having a noticeable effect on the U.S. economy.
All three of the most popular stock indices fell in the wake of White House Press Secretary Karoline Leavitt's announcement of the 25% tariffs on imported goods on Friday. Per CNBC, the overall market index fell by half a percent. The Dow Jones Industrial Average has tumbled by more than 300 points as of this writing.