Sen. John Fetterman (D-PA) on Thursday was dismissive of speculation he’ll switch parties but warned that his Democratic colleagues have strayed far from their roots. 

Fetterman penned an op-ed in the Washington Post detailing his concerns with the Democratic Party and raising fears that “once-common” views on immigration, Israel, Iran, and government shutdowns have been sacrificed to appease the party’s “fringe and agitated” factions. Still, the swing-state senator once again reiterated his commitment to remaining a blue-dog Democrat amid growing rumors he’ll transfer allegiance to the Republican Party.