No Republican lawmakers signed onto the bill, though Democrats were able to pass it via a simple majority through the budget reconciliation process. It's a major win for Democrats' agenda, whose prospects in the looming midterm elections had looked dim for months.
Vice President Kamala Harris cast the tie-breaking vote in the evenly divided chamber as Democrats erupted into applause at the end of their 16-hour session.
A visibly emotional Senate Majority Leader Chuck Schumer took to the Senate floor to thank everyone from Congressional staffers to the Capitol cafeteria workers for aiding the effort, telling them: 'You'll tell your grandchildren you were here.'
Lawmakers had been debating the package since 11 p.m. on Saturday, and continued into late afternoon on Sunday without stopping.
But Republicans have accused Democrats of misleading the American public with the legislation's name, claiming it won't help sky-high inflation and citing a study that says it could increase taxes on every income bracket.