“It’s just sad in America that we have such poor choices right now,” Walker said in an interview with Madison, Wisconsin’s WKOW that was first reported by Politico.

“[Trump] is not yet the nominee. Officially that won’t happen until the middle of July and so for me that’s kind of the timeframe,” Walker said. “In particular I want to make sure that he renounces what he says, at least in regards to this judge.”

Trump called a judge’s “Mexican heritage” a conflict of interest that should prevent him from presiding over a lawsuit against Trump University. Several party leaders have called out Trump for his comments including Speaker Paul Ryan and Sen. Lindsey Graham (R-S.C.).