"It's possible, yes. Yeah. That would be possible, absolutely," Trump responded.
This new firestorm began after Trump suggested that Judge Gonzalo Curiel, who presides over one of the lawsuits involving the now-closed Trump University, has an "absolute conflict" because of his Mexican heritage. Curiel is an American citizen and was born in Indiana.
On Sunday, Trump doubled down on his claims.
"I say he's got bias. I want to build a wall," Trump began, referring to the wall he has proposed building along the U.S. border with Mexico. "This judge has treated me very unfairly, he's treated me in a hostile manner. And there's something going on."
Trump maintains that he will do "very well" with Hispanic voters, although polls have not supported that contention. In an ABC News/Washington Post poll conducted in April, Trump had a 66 percent disapproval rating among Latino voters.