Donald Trump's positions on major issues like immigration, the refugee crisis, health care, the Iran nuclear deal, and how to defeat ISIS have shifted during his campaign significantly, according to a review by NBC News.
In some case the GOP front-runner has taken two or three contradictory positions in the same week or even in the same interview, as was the case when he has outlined what to do with ISIS oil field profits.
Trump has also vacillated on whether to send in ground troops against ISIS or who exactly would be deported under his immigration plan.
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Click through for more examples of what NBC News calls Trump's powerfully incoherent rhetoric.