President Donald Trump made official Wednesday his long-promised tariffs for the automotive industry, imposing a 25% import tariff on all cars, light-duty trucks and some car parts imported into the U.S. Trump argued the tariffs will boost domestic manufacturing by forcing American automakers to build cars in the U.S.

President Trump said he would impose 25% tariffs on global automotive imports to the U.S., which would be added on top of other tariffs. Here’s what to know. What’s covered? Finished cars and auto parts that aren’t made in the U.