WASHINGTON — Senators hunkered down Monday to consider proposed amendments to President Donald Trump's big bill of tax breaks and spending cuts amid challenges including the weekend announcement from one GOP senator that he won't run for reelection after opposing the package over its Medicaid health care cuts.
The potential changes were being considered in what's called a vote-a-rama, though most are expected to fail. With Democrats united against the Republican president's legislation and eagerly lined up to challenge it, the voting could take all day and churn into the night.
''It's time to vote,'' said Senate Majority Leader John Thune of South Dakota as the session opened.
Senate Democratic Leader Chuck Schumer of New York said the ''hardest choices" for Republicans are still to come. Democrats, he said, are bringing ''amendment after amendment after amendment to the floor, so Republicans can defend their billionaire tax cuts and so they can try to explain their massive cuts to Medicaid to people back home.''
The day will be pivotal for the Republicans, who have control of Congress and are racing against Trump's July Fourth deadline to wrap up work. The 940-page ''One Big Beautiful Bill Act,'' as it's formally titled, has consumed Congress as its shared priority with the president, with no room politically to fail, even as not all Republicans are on board.
A new analysis from the nonpartisan Congressional Budget Office found 11.8 million more Americans would become uninsured by 2034 if the bill became law. The CBO said the package would increase the deficit by nearly $3.3 trillion over the decade.
House Speaker Mike Johnson's leadership team has recalled lawmakers back to Washington for voting in the House as soon as Wednesday, if the legislation can first clear the Senate.
But the outcome remains uncertain.