Trump has vowed punishing tariffs on Mexico, Canada and China, which are Texas’ biggest international trading partners.

The stakes are particularly high for Texas and other border states, where trade with Mexico is worth hundreds of billions of dollars a year.

President Donald Trump affirmed on Thursday that imports from U.S. allies Mexico and Canada will be hit with a 25% tariff starting on Saturday. Speaking to the press from the Oval Office, Trump said that his administration will follow through in announcing tariffs on America’s neighboring countries for “a number of reasons”—chiefly among them being an alleged influx of migrants at the U.