The Senate kicked off a marathon "vote-a-rama" session Monday on President Donald Trump's proposed legislation, known as the "One Big, Beautiful Bill," with votes on a series of amendments expected to stretch for hours.
A final vote on the bill isn’t expected until late Monday night or early Tuesday morning.
With the current Senate makeup at 53-47, Republicans can afford to lose only three votes for the bill to pass. In the event of a tie, Vice President JD Vance would cast the deciding vote.
Over the weekend, Senate Republicans cleared significant hurdles to advance the bill, despite efforts by Democrats to stall it.
IN RELATED NEWS | Key provisions cut as Congress races against 'Big Beautiful Bill' deadline
Senate Democrats forced a 16-hour reading of the bill, using the delay to criticize proposed cuts to Medicaid and public food assistance programs.
In a surprise move, Sen. Thom Tillis, R-N.C., announced he would oppose the legislation due to concerns over the proposed Medicaid changes. He also declared he will not seek reelection next year. President Trump responded by saying, "Great News! 'Senator' Thom Tillis will not be seeking reelection."
IN CASE YOU MISSED IT | GOP Sen. Thom Tillis says he won't seek reelection after opposing Trump bill
The American Clean Power Association has also criticized the bill, pointing to provisions that would impose new taxes on wind and solar energy in the coming years.
The nonpartisan Congressional Budget Office estimates the Senate version of the bill would add more than $3 trillion to the deficit over the next decade. While Republicans argue that tax cuts in the bill will fuel economic growth, the legislative path forward remains politically uncertain.
As the week unfolds, President Trump is expected to play a hands-on role in rallying support. If the bill passes the Senate, it will return to the House of Representatives, where Republicans hold a narrow majority.