Nippon Steel Corp is making a final attempt to gain support for its $14.1 billion takeover of United States Steel Corp, facing significant opposition from President Biden, Vice President Harris, and former President Trump, who prioritize the preservation of domestic ownership. The United Steelworkers union leadership opposes the deal, but some rank-and-file members express support, fearing that alternative buyers may not match Nippon's investment pledges. The Committee on Foreign Investment in the United States is reviewing the deal, although Biden is expected to block it once it reaches his desk. The potential collapse of the acquisition could have significant implications for U.S.-Japan relations and the global steel market amid rising Chinese dominance. Additionally, some local union members believe the deal could safeguard jobs in Pennsylvania's Mon Valley for decades. The situation underscores the complexities of balancing economic interests with national security concerns and political calculations ahead of the upcoming elections.