This is a developing story. Check back for updates. Cleveland Cliffs is partnering with rival Nucor in a potential bid for U.S. Steel, whose takeover by Japan's Nippon Steel was just blocked by the White House earlier this month,

Cleveland-Cliffs Inc. is partnering with Nucor Corp. to weigh a potential joint bid for United States Steel Corp., according to a person familiar with the matter.

U.S. Steel shares jumped Monday on a report that Cleveland-Cliffs is teaming up with rival Nucor for a potential bid for the company, whose $14.1 billion buyout by Nippon Steel was recently blocked by President Joe Biden.