US Steel and Nippon, whose $14.3 billion merger was blocked by President Joe Biden last week, filed a lawsuit against the US government Monday, claiming Biden’s executive order to bar the companies from combining was signed for “purely political reasons.

Nippon Steel and U.S. Steel filed a federal lawsuit challenging the Biden administration's decision to block a proposed nearly $15 billion deal for Nippon to acquire Pittsburgh-based U.S. Steel.. The suit,

U.S. Steel and Japan’s Nippon Steel sued the United States government on Monday in a last-ditch attempt to revive their attempted merger after President Biden blocked it last week on the basis that the transaction posed a threat to national security.