Mexican President Claudia Sheinbaum has clapped back at President-elect Trump’s proposed 25% tariff on imported goods from Mexico, saying she would impose tariffs of her own on the U.S.

Mexico and Canada are the United States’ top two trading partners, accounting for nearly 30% of trade volumes.

President-elect Donald Trump appears to be making good on at least one of his campaign promises: slapping tariffs on imports from the United States’ biggest trade partners.