Sen. Marco Rubio Marco Antonio RubioMurky TikTok deal raises questions about China's role Sunday shows preview: Justice Ginsburg dies, sparking partisan battle over vacancy before election Florida senators pushing to keep Daylight Savings Time during pandemic MORE (R-Fla.) on Sunday appeared to slam President Trump for indicating that he is open to negotiating the corporate tax rate in new legislation.

Trump made comments over the weekend suggesting it was a possibility that added some uncertainty to the Republican tax legislation just hours after the Senate narrowly passed the GOP tax bill.

For days heard that anything more than 20% corp rate would be anti-growth & catastrophic. Less than 12 hours later 22% is now an option? — Marco Rubio (@marcorubio) December 3, 2017

Trump hinted on Saturday that the rate could be two percent higher than the 20 percent he had previously pushed for when negotiating the bill with lawmakers through the fall.

Rubio appeared angry that his joint push with Sen. Mike Lee Michael (Mike) Shumway LeeMcConnell shores up GOP support for coronavirus package McConnell tries to unify GOP Davis: The Hall of Shame for GOP senators who remain silent on Donald Trump MORE (R-Utah) on Friday night to expand child tax credit in the tax bill failed because GOP leaders did not want to budge on the corporate tax rate -- a part of the tax bill that Trump now appears open to raising.

"Senate leaders & White House fought hard to defeat expanded child tax credit b/c of 20.94% rate but now 22% is ok?" Rubio wrote in a tweet on Saturday.

The House and Senate versions of the bill have both passed and are currently being reconciled before the legislation makes it to Trump's desk.

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"People are going to be very, very happy. They're going to get tremendous, tremendous tax cuts and tax relief and that's what this country needs," Trump told reporters at the White House.

He added that the business tax would drop “all the way down from 35 to 20. It could be 22 when it comes out, but it could also be 20. We’ll see what ultimately comes out.”

Republican senators on Friday worked all day and into the early hours of Saturday morning to ultimately pass a GOP tax bill that will overhaul the nation's tax code.

The passage is a legislative win for the Trump administration as well as Republican lawmakers.