Senate Majority Leader Mitch McConnell, R-Ky., announced he has secured at least 50 votes needed to pass a $1.4 trillion tax cut bill later this afternoon.

"We have the votes," McConnell said after leaving a closed-door meeting with Republicans.

Shortly after the meeting, Sen. Jeff Flake, R-Ariz., a holdout, announced he will back the plan despite the absence of a trigger he was seeking along with Sen. Bob Corker, R-Tenn.

The GOP secured enough support after expanding small business tax cuts, a move that lured in Sens. Ron Johnson, R-Wis., and Steve Daines, R-Mont.

Corker, who had hoped for a tax-raising trigger that was rejected by the parliamentarian, said he is still undecided. No trigger is part of the bill, GOP lawmakers reported after the meeting.

"I'll let my thoughts be known a little later," Corker said.

The Senate can pass the tax bill with just 50 votes because Vice President Mike Pence can vote to break the tie.