President Donald Trump signed a memo Thursday directing his administration to start determining what level of reciprocal tariffs the U.S. will impose on foreign imports—after long promising to announce the new round of tariffs—but the new taxes will not take effect yet.

The biggest foreign supplier of cars was Mexico ($49 billion), followed by Japan ($40 billion), South Korea ($37 billion), Canada ($28 billion) and Germany ($25 billion).

The president said he planned sweeping tariffs on all steel and aluminum imports on Monday and would take other action to even out tariff rates with the rest of the world later this week.