The deal is believed to reverse the decline of steel that began under President Jimmy Carter in the 1970s.

“From Pennsylvania to Arkansas, and from Minnesota to Indiana, AMERICAN MADE is BACK,” Trump said on his social media platform Truth Social.

“This will be a planned partnership between United States Steel and Nippon Steel, which will create at least 70,000 jobs, and add $14 Billion Dollars to the U.S. Economy,” Mr. Trump wrote on social m...