Mexican President Claudia Sheinbaum says that the incoming U.S. president’s plan to institute massive tariffs on Mexican imports would bring about mutually assured economic destruction.

President Claudia Sheinbaum suggested Tuesday that Mexico could retaliate with tariffs of its own, after U.S. President-elect Donald Trump threatened to impose 25% import duties on Mexican goods if the country doesn’t stop the flow of drugs and migrants across the border.

President-elect Donald Trump promised to impose a 25% tariff on all goods from Mexico and Canada on his first day in office. Imports from Mexico and Canada totaled $900 billion in 2023. Trump has proposed tariffs as a solution to government funding.