The CEO of Cleveland-Cliffs – a Nippon and U.S. Steel competitor – argues suing his company and the Biden administration is "a bad idea" as the billion-dollar deal was legally blocked.

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.

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.