Donald TrumpDonald John TrumpTrump rallies in Nevada amid Supreme Court flurry: 'We're gonna get Brett' Trump: 'Good news' that Obama is campaigning again Trump boosts Heller, hammers 'Wacky Jacky' opponent in Nevada MORE is accusing Sen. Ted CruzRafael (Ted) Edward CruzPoll: Cruz leads O'Rourke by 3 in Texas Senate race Julián and Joaquin Castro to campaign with O'Rourke in Texas The Hill's 12:30 Report — Trump rips 'ridiculous' spending bill | FBI dragged into new fight | Latest on Maryland shooting MORE (R-Texas) of stealing his plan to reform immigration.

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The businessman said he was the first candidate in the Republican primary field to come up with the idea to build a wall on the U.S.-Mexico border.“In fact, I was watching the other day, and I was watching Ted talk, and he said, ‘We will build a wall.’ The first time I’ve ever heard him say it,” Trump said in an interview broadcast Sunday on CBS’s “Face the Nation.”“And my wife, who was sitting next to me, said ‘Oh, look, he’s copying what you’ve been saying for a long period of time,’” he added.“And I was strong on the border, and I’m the one who came up with it.”The Republican primary front-runner also said he is not worried about polls that show him trailing Cruz in the first-in-the-nation Iowa caucuses, which are less than a month away.“You know, nobody says it, in Iowa, the CNN poll, it’s 33 to 20 that I’m leading. Ted Cruz is second,” he said. “Nobody ever talks about that poll.”“I have a real good feeling with Iowa,” he said.