(Reuters) -U.S. Steel and Nippon Steel said on Monday they had filed two lawsuits after U.S. President Joe Biden blocked the $14.9 billion buyout of the American steelmaker by the Japanese company.

One lawsuit asked a court to set aside Biden’s order and the review process by a U.S. government panel.

The second lawsuit is against Cleveland-Cliffs, its CEO Lourenco Goncalves, and USW union President David McCall “for their illegal and coordinated actions” aimed at preventing the deal, U.S. Steel and Nippon Steel said.

(Reporting by Aatreyee Dasgupta in Bengaluru; Editing by Sriraj Kalluvila and Arun Koyyur)