President-elect Donald Trump’s threatened tariffs might be more of a political negotiating tactic than a set-in-stone policy, but the outcome is sure to have huge impacts on American consumers.

The president-elect said that he would impose the across-the-board tariffs on Day 1 and that they would stay in place until Canada, Mexico and China halted the flow of drugs and migrants.

Even as Mexico President Claudia Sheinbaum attempts to quell concerns over Donald Trump’s threat of 25% tariffs, economists are looking glumly at the trouble ahead should the US president-elect actually follow through.