About 40 minutes from the time that Republican leaders told senators to take their seats in the chamber in anticipation of a final vote on Trump's megabill, Republican leaders like Senate Majority Leader John Thune and Senate Majority Whip John Barrasso are still not on the floor.

The revised package now heads back to the House, where Republican leaders hope to approve it and send it to Trump before a self-imposed July 4 deadline. But it faces hurdles.

Republicans squeaked the tax-and-spending megabill through the Senate, capping a long night of dealmaking to win over holdouts, with a tie-breaking vote from Vice President JD Vance.