FILE PHOTO: A general view of interior of a Nucor steel factory in Blytheville, Arkansas, U.S., March 28, 2025. REUTERS/Karen Pulfer Focht/File Photo

WASHINGTON (Reuters) -U.S. President Donald Trump will sign an executive order on Tuesday making official his vow to double tariffs on steel and aluminum, White House spokeswoman Karoline Leavitt told reporters in a briefing.

Trump on Friday announced that he would increase tariffs on the two metals from 25% to 50%. On Monday, U.S. steel and aluminum prices jumped while shares of foreign steelmakers fell.

(Reporting by Jeff Mason; writing by Susan Heavey; Editing by Leslie Adler)