Nippon Steel Corp. and United States Steel Corp. claimed former President Joe Biden unfairly prejudged their $14.1 billion merger and gave the companies no chance for feedback on a “sham” national security review before he blocked the deal.

Nippon Steel (JP:5401) and U.S. Steel (X) are trying to save their $14.9 billion merger deal by filing an opening brief in the U.S. Court of

U.S. Steel and Nippon Steel laid out their case Monday that then-President Joe Biden hamstrung a national security review to justify blocking the companies’ merger. An opening brief filed in the U.S.