Best Buy beat Wall Street's fourth-quarter earnings and revenue estimates as the company's computing and phone sales increased.

Companies that depend on cross-border trade were already facing higher prices in anticipation of the 25% tariffs on imports from Mexico and Canada that took effect Tuesday. Now disruption looms, and if consumers won’t accept steep price hikes,

President Trump confirmed Monday that his long-promised tariffs on goods from Mexico and Canada will go into effect on Tuesday. Why it matters: The announcement sent financial markets tumbling in anticipation of a potential trade war between the U.