WASHINGTON — Amid the whirl of orders Donald Trump issued in the early hours of his presidency, one was conspicuous in its absence: new tariffs on Canada and Mexico. Trump had pledged to impose 25% tariffs on both countries on Day One of his presidency to pressure them to keep migrants and drugs out of the United States.

Tariffs of 25 percent could hit goods from Mexico and Canada entering the U.S. as soon as next month, Donald Trump announced on Monday while signing executive orders, signaling the beginning of a potential trade war that could have major effects on the U.S. economy.