Trump: Cruz changed tune on immigration because he's losing
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Republican presidential candidate Donald TrumpDonald TrumpTrump supporter in Congress attacks 'ideological free traders' A veteran's call to action for President-elect Trump GOP elector: 'I’m no longer comfortable with Mr. Trump’ MORE on Tuesday slammed rival Ted CruzTed CruzArk., Texas senators put cheese dip vs. queso to the test Senate GOP: National museum should include Clarence Thomas Senate GOP to Obama: Stop issuing new rules MORE for changing his tune on deporting the millions of immigrants in the country illegally. 

"Ted Cruz only talks tough on immigration now because he did so badly in S.C. He is in favor of amnesty and weak on illegal immigration," Trump tweeted.
 

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Trump has focused his campaign on illegal immigration, touting his proposals to build a wall on the U.S.-Mexico border and deport the 12 million immigrants in the U.S. illegally.
 
Cruz, who has faced criticism for not providing details on what he would do with those 12 million people, offered tough rhetoric during an interview Monday night on Fox News.
 
"Listen, we should enforce the law. How do we enforce the law? Yes, we should deport them," Cruz told host Bill O'Reilly, adding, "We should build a wall, we should triple the border patrol."
 
When presented a hypothetical example of whether as president he would go to an Irish immigrant's house, take him out and put him on a plane home, Cruz said, "You better believe it."

A Cruz spokesperson insisted that the candidate hadn't changed his position, though Cruz last month dismissed going "door-to-door," as advocated by Trump, to remove illegal immigrants.
 
Cruz, who finished a disappointing third in South Carolina on Saturday behind Trump and Marco RubioMarco RubioSenate GOP to Obama: Stop issuing new rules Juan Williams: McConnell won big by blocking Obama The ignored question: What does the future Republican Party look like? MORE, sought during his interview Monday to portray his rivals as weak on illegal immigration.