A procedural vote to set up final passage for the legislation stalled as Speaker Mike Johnson worked to sway holdouts and meet Trump's July 4 deadline.

Republicans can likely only afford to lose three votes, and several GOP critics have threatened to sink the bill.

The Senate on Monday morning began a "vote-a-rama" on proposed amendments to President Donald Trump's megabill for his second term priorities. It comes after a rare weekend session for senators, which included a dramatic 51-49 procedural vote on Saturday night to advance the massive tax and immigration bill and a forced reading of the 940-page bill by Democrats.