Heidi Cruz referred to husband, Texas Sen. Ted CruzRafael (Ted) Edward Cruz Hickenlooper, Bennet bring deep ties to 2020 debate stage 2020 Democrat Bennet releases comprehensive government reform plan GOP frets about Trump's poll numbers 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 TrumpNew EPA rule would expand Trump officials' powers to reject FOIA requests Democratic senator introduces bill to ban gun silencers Democrats: Ex-Commerce aide said Ross asked him to examine adding census citizenship question 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.