President Donald Trump is preparing to formally announce 25% tariffs on steel and aluminum imports. It's part of an aggressive effort to remake the existing terms of world trade that so far has compounded economic uncertainty.

President Donald Trump announced on Air Force One Sunday that he would impose a 25% tariff on steel and aluminum imports, the latest move as part of the ongoing trade war between the U.S. and its allies.

The White House is set to implement a 25% tariff on steel and aluminum imports, which could impact prices on a host of consumer products.