Trump has justified tariffs on goods from Canada, the top U.S. export market, by accusing it of failing to stop the cross-border flow of fentanyl, even though U.S. government data shows Canada accounts for only 1% of the fentanyl that enters the United States.

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.