Numerous countries around the world are facing the prospect of new tariffs on their exports to the United States on Aug. 7 because they haven’t yet reached a trade deal with the Trump administration.

South Africa faces a 30% tariff on its exports to the United States starting next week, a move expected to cost tens of thousands of jobs after the country failed to secure a trade deal before a deadline set by U.

The president’s trade campaign is only beginning — and whether he will succeed remains an open question with great consequence for the U.S. economy.