The suit, filed in the U.S. Court of Appeals for the District of Columbia, alleges that it was a political decision and violated the companies’ due process.

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.

U.S. President Joe Biden has issued an order to halt Nippon Steel Corp.'s plan to acquire United States Steel Corp. This is an extraordinary case of i･･･