WASHINGTON (AP) — Rep. Matt Gaetz said Sunday he will try to remove House Speaker Kevin McCarthy, a fellow Republican, from his leadership position this week after McCarthy relied on Democratic support to pass legislation that avoided a government shutdown.

Gaetz, a longtime McCarthy nemesis, said McCarthy was in “brazen, material breach” of agreements he made with House Republicans in January when he ran for speaker. As a result, Gaetz said he would be filing a “ motion to vacate the chair,” as House rules permit.

No speaker has ever been removed from office through such a move. Procedural votes could be offered to halt the motion or it could trigger a House floor vote on whether McCarthy, R-Calif., should remain speaker.

“I think we need to rip off the Band-Aid,” Gaetz, R-Fla., told CNN’s “State of the Union.” “I think we need to move on with new leadership that can be trustworthy.”