Reince Priebus continues to be unhappy that some Republicans don’t support Donald Trump, but now he’s taking his tactics against them to the next level: Priebus says the party might make it difficult for them to run for president in the future.

“If they’re thinking they’re going to run again someday, I think we’re going to evaluate the nomination process, and I don’t think it’s going to be that easy for them,” Priebus said. “We’re a private party. We’re not a public entity. Those people need to get on board.”