Senate debates Trump's "big, beautiful bill" ahead of expected marathon overnight votes

Washington — The Senate is debating President Trump's massive tax bill Sunday ahead of what's expected to be a marathon overnight session as the chamber efforts to pass the centerpiece legislation of Mr. Trump's second term agenda.

The House narrowly passed the bill last month, and Senate Republicans have since been working to put their mark on the legislation, treading carefully so as not to throw off the delicate balance in the lower chamber. The House will need to approve the Senate's changes to the bill before it can head to the president's desk for his signature. And lawmakers are moving quickly, with a self-imposed July 4 deadline to get the measure signed. 

The Senate has been working through the weekend as the GOP nears a final sprint on the legislation ahead of the deadline. Known as "One Big, Beautiful Bill," the legislation includes increased spending for border security, defense and energy production, which are offset in part by cuts to healthcare and nutrition programs. The Congressional Budget Office estimated Sunday that the legislation would increase the deficit by nearly $3.3 trillion over the next decade.