Dozens of lawmakers stand to reap a big windfall from a loophole in the sweeping GOP tax overhaul bill.
With the vote, the GOP leaps closer to its promise of dramatically remaking U.S. tax law.
A flurry of last-minute changes Friday to the Senate Republican tax bill have set the plan on a fast track to passage.
Holdout Sen. Bob Corker says he thinks the GOP can approve it even without his vote.
CNBC's Ylan Mui reports Sen. Ron Johnson (R-Wisc.) has been won over to vote for the Senate's tax reform bill.
Sens. Johnson and Daines reach an agreement with the GOP leadership to raise the amount of pass-through income business owners can deduct.
The change appears to be designed to earn support from Sens. Ron Johnson, R-Wis., and Steve Daines, R-Mont.
A tax bill tool designed to win the support of key GOP senators is finding resistance among others.
U.S. Senate Republicans rammed forward a tax-cut bill in an abrupt, partisan committee vote that set up a full vote by the Senate as soon as Thursday.
Some GOP senators haven't yet committed to supporting the tax bill, but anti-tax crusader Grover Norquist thinks the legislation will pass.
With the party-line 12-11 vote to advance the plan, Republicans overcame one possible roadblock.
U.S. President Donald Trump predicted that Sen. Jeff Flake will oppose the GOP tax bill, but the senator's office says he has not yet made up his mind.
U.S. President Donald Trump won't insist on including repeal of a health insurance mandate the tax-reform bill, a senior White House aide said on Sunday.
Treasury Secretary Steven Mnuchin makes a pitch to owners of small and medium-sized businesses to support the Republican tax cut efforts.
The tax bill now goes to a full Senate where some Republicans are already skeptical.
The House and Senate tax bills are more aligned than they are opposed, Sara Fagen said.
But tax reform is "not the whole ball game," strategist Bob Doll tells CNBC.
Johnson says President Trump personally promised to "'work my tail off'" to win the Wisconsin Republican's vote.
"In the current form, I wouldn't vote for it," the Wisconsin Republican says.
Sen. Ron Johnson, (R-Wis.), talks about his opposition to the current version of the Senate's tax bill.