Heidi Cruz referred to husband, Texas Sen. Ted CruzRafael (Ted) Edward CruzO'Rourke to give commencement address at Texas's oldest black college Cornyn campaign, Patton Oswalt trade jabs over comedian's support for Senate candidate MJ Hegar announces Texas Senate bid MORE, as an immigrant during an Indiana campaign stop on Saturday, prompting the campaign to say she misspoke.

“Ted is an immigrant,” Heidi Cruz said. “He is Hispanic. We can unify this party.”

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A Cruz aide later told the Washington Examiner that Heidi meant to call her husband the son of an immigrant. 

Republican presidential front-runner Donald TrumpDonald John TrumpForget the spin: Five unrefuted Mueller Report revelations Lara Trump: Merkel admitting migrants 'one of the worst things that ever happened to Germany' Financial satisfaction hits record high: survey MORE was asked about the statement in an interview Sunday with Fox News's Geraldo Rivera, who is Hispanic.

“It’s just so bad. Let me tell you. I assume she’s saying he’s an immigrant from Canada. Because you know he lived in Canada for the first four years of his life. Not an immigrant like I think she’s referring to,” Trump said. “She’s, I assume, referring to one of your areas of the world. Right, Geraldo?"

Cruz is from Canada, but his father, Rafael Cruz, was born in Cuba, coming to the U.S. in 1957 to attend the University of Texas at Austin.

Trump brought up the misstep again at a campaign rally on Sunday afternoon.