For decades, U.S. and Mexican tomato operations worked under a trade agreement that allowed for relatively easy importation of Mexican tomatoes into U.S. markets. The deal was meant to protect American tomato farmers, but many believe the old trade agreement didn’t do enough.

Numerous countries around the world are facing the prospect of new tariffs on their exports to the United States on Aug. 7, a potential blow to the global economy, 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.