The deal gives the White House extraordinary control over U.S. Steel as part of a pact to alleviate national security concerns.

Nippon Steel completes its purchase of U.S. Steel after more than a year and half of high-stakes negotiations and national security concerns.

U.S. Steel shares stopped trading on the New York Stock Exchange on Wednesday after Japan’s Nippon Steel completed its acquisition of the iconic American industrial name. President Donald Trump has insisted for weeks that the companies would form a “partnership” in which U.