President Biden is preparing to soon block an attempt by Japan’s Nippon Steel to buy U.S. Steel on national security grounds, according to three people familiar with the matter, likely sinking a merger that became entangled in election-year politics in the United States.

       A decision to block the takeover would come after months of wrangling among lawmakers, business leaders and labor officials over whether a corporate acquisition by a company based in Japan — a key U.S. ally — could pose a threat to national security. A move by Mr. Biden to block the deal on those grounds could roil relations between the two nations at a moment when the United States has been trying to deepen ties with Japan amid China’s growing influence in East Asia.

       For months, the Committee on Foreign Investment in the United States, or CFIUS, has been scrutinizing the deal over potential risks. There has been mounting speculation that the Biden administration could intervene before the November election.

       A White House official told The New York Times that CFIUS “hasn’t transmitted a recommendation to the president, and that’s the next step in this process.”

       Advertisement

       SKIP ADVERTISEMENT

       CFIUS is made up of members of the State, Defense, Justice, Commerce, Energy and Homeland Security Departments, and is led by the Treasury secretary, Janet L. Yellen.

       The committee sent a letter to U.S. Steel in recent weeks saying that it had found national security concerns with the transaction, one of the people familiar with the situation said.

       Subscribe to The Times to read as many articles as you like.