House Republicans began taking a key procedural vote on President Trump's massive domestic policy bill late Wednesday evening, after scrambling for hours to shore up support ahead of a self-imposed July 4 deadline to get the bill to the president's desk.

The Alaska Senator called her decision on the bill “probably the most difficult and agonizing 24-hour legislative period that I’ve encountered."

Neither Colorado Senator voted for the budget bill, which now heads back to the House. Republicans are under pressure to pass the bill and get it to the president’s desk by July 4.