President-elect Trump has also opposed Nippon Steel's $15 billion acquisition of U.S. Steel, which President Biden blocked last week.

Separate lawsuits from Nippon Steel and U.S. Steel target President Joe Biden as well as a steelworkers union head and a rival steelmaker’s CEO.

U.S. Steel and the Japanese firm that had sought to acquire it are suing the Biden administration after the president announced he was blocking a proposed deal for the iconic American manufacturer.

President Joe Biden has rejected the nearly $15 billion proposed deal for Nippon Steel of Japan to purchase Pittsburgh-based U.S. Steel.

The companies argued in a lawsuit announced on Monday that Biden violated the Constitution by blocking the merger via a sham national security review that deprived the companies of their right to a fair process.

President Joe Biden on Friday announced his decision to block the $14 billion sale of U.S. Steel to Japan’s Nippon Steel, citing national security concerns. The move could have serious implications in Gary,

The companies condemned the president's decision and hinted at taking legal action, while U.S. Steel's CEO accused Biden of "political corruption."

President Joe Biden officially announced on Friday he has blocked Nippon Steel's $14.1 billion purchase of U.S. Steel, setting up a likely federal court battle.

A 123-year-old steelmaker’s fate could yet become a restraint on modern-day executive power. United States Steel and suitor Nippon Steel have gone to court over U.S. President Joe Biden’s decision to nix their $15 billion deal.

U.S. Treasury Secretary Janet Yellen said on Wednesday that Nippon Steel's planned acquisition of U.S. Steel received a "thorough analysis" by an interagency review body that was sent to President Joe Biden,

Nippon Steel and US Steel are betting Donald Trump can be persuaded to back their $15bn deal, accusing President Joe Biden of blocking the transaction to win union support in last year’s presidential election.