Antidumping duties are calculated to measure the percentage by which Mexican tomatoes have been sold in the United States at "unfair prices," the Commerce Department said in its statement. President Donald Trump on Saturday had separately threatened to impose a 30% tariff on imports from Mexico starting on August 1,

The US is imposing a 17% tariff on most tomatoes imported from Mexico with immediate effect, the government said. The duty came into force after the US withdrew from a long-standing agreement with its southern neighbour,

The Trump administration announced on Monday a duty of about 17% on fresh tomatoes from Mexico, which account for two-thirds of the tomatoes eaten in the U.S., and the end of an export deal between the two countries.

A 17% import tax has been slapped on most fresh Mexican tomatoes. Proponents of the tariffs say it’ll help rebuild the shrinking tomato industry in the United States, but experts say prices will go up as much as 10% at the store in the meantime.

One of the largest tomato importers warned it may need to raise prices by 10% as a result of the tomato trade deal ending.