President Trump says he'll announce the U.S. will impose 25% tariffs on all steel and aluminum imports, including from Canada and Mexico, as well as other import duties.

President Donald Trump said he'll announce Monday that the United States will impose 25% tariffs on all steel and aluminum imports, including from Canada and Mexico, as well as other import duties later in the week.

Existing American tariffs already restrict steel and aluminum shipments from China, which is now flooding other markets with its exports instead.