White House lights up Manchin after he crushes Biden’s megabill - POLITICO

With an evenly split Senate, Senate Majority Leader Chuck Schumer needs every Democrat to go along with the legislation, which only requires a simple majority vote. That dynamic gives Manchin enormous leverage over Biden’s agenda, allowing him to single-handedly sink a priority that Democrats have spent much of the year working on.

If by “single-handedly” you mean Manchin’s single vote plus 50 other senators’ votes.