Sen. John Barrasso (R-Wyo.) said Sunday that he would not put it past House Speaker Nancy Pelosi (D-Calif.) to politicize a deal to avert a government shutdown.

“I will believe it when I see it,” Barrasso said on Fox News’s “Sunday Morning Futures” in reference to an informal deal between Pelosi and Treasury Secretary Steven Mnuchin to pass a clean bill to fund the government. “It's not beyond Nancy Pelosi to play politics with this.”

“We have been at this point before, where Democrats just want to add more money to the federal debt, with more spending. We need to end government shutdowns permanently,” Barrasso added. “I have introduced legislation with a number of my colleagues, the End Government Shutdown Act, so that there would never be a government shutdown again.”

Pelosi and Mnuchin last week agreed to a clean continuing resolution to avert a shutdown at the end of the month.

"We do believe that we'll be able to get funding to avoid a shutdown," White House press secretary Kayleigh McEnany told reporters Thursday. Mnuchin and Pelosi agreed to "work to avoid a shutdown and keep the government open, and that the best way to do that is a clean CR [continuing resolution],” a source familiar with the talks told The Hill the same day.

While the duration of the new continuing resolution is not set in stone, Mnuchin told Fox News’s Bret Baier on Sunday that the deal would likely fund the government until December, at which point Congress would need to return for a lame-duck session to pass another bill. The agreement means the continuing resolution is unlikely to be tied to coronavirus relief.