Sen. Ted Cruz (R-TX) won’t be helping the Senate Conservatives Fund support primary challengers to Republican senators, according to Politico.

Cruz, the vice chair of the National Republican Senatorial Comittee, told his caucus in a private meeting Wednesday that he won’t fundraise for the conservative group or take a stance in primary races.

He also told his colleagues that Sens. Mike Lee (R-UT) and Rand Paul (R-KY) will not fundraise for the SCF.

Catherine Frazier, spokeswoman for Cruz, said that he will still be involved with the conservative group’s initiatives, but won’t be participating in its actions related to Senate races.

“He’ll continue working with them to promote common conservative policies, but not get involved in their endorsement or fundraising decisions,” Frazier said. “SCF’s organization is not just about primary politics, but promoting conservative causes that Republicans across the spectrum can support.”