Donald Trump announced Monday that the US will impose a 25 percent tariff on all imports of steel and aluminum.

The president has a habit of declaring radical changes to trade policy, only to swiftly walk them back. Last week, Trump postponed his long-promised 25 percent tariffs on all imports from Mexico and Canada, after reaching agreements with both countries over border security.

But there’s a reason to think that Trump’s steel and aluminum tariffs will stick: He implemented a nearly identical policy during his first term.

President Donald Trump will announce Monday new 25 percent tariffs on all steel and aluminum entering the United States, including from Canada and Mexico.

Canada and Mexico are two of the U.S.’s biggest steel trading partners, and Canada is the biggest supplier of aluminum metal into the country.

UPI reports Trump told reporters Sunday aboard Air Force One of his plan by declaring, “Any steel coming into the United States is going to have a 25 percent tariff. Aluminum, too.”

President Trump said he will announce 25 percent tariffs on steel and aluminum on Monday, adding that he would also kick off reciprocal tariffs in the days after.

Trump said that the steel and aluminum tariffs would impact “everybody” when asked what countries would be effected.

“Any steel coming into the United States is going to have a 25 percent tariff — aluminum too,” Trump told reporters. “Twenty-five percent … for both.”

He added that details of the reciprocal tariffs will be announced on Tuesday or Wednesday in a news conference.

President Donald Trump said he will announce on 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.

“Any steel coming into the United States is going to have a 25% tariff,” he told reporters Sunday on Air Force One as he flew from Florida to New Orleans to attend the Super Bowl. When asked about aluminum, he responded, “aluminum, too” will be subject to the trade penalties.