Trump's stunning apparent evolution on the issue is just his latest on a growing list of prominent subjects on which he has spoken out of both sides of his mouth, including abortion ("I'll do far more for women than Hillary Clinton will ever do" versus saying women who undergo illegal abortions should face "some form of punishment"), torture (saying U.S. military should "take out the families" of suspected terrorists versus admitting that the U.S. "is bound by laws and treaties"), nuclear proliferation ("the biggest problem in the world" versus claiming he wanted to see South Korea and Japan possess nukes), minimum wage (against raising it versus supporting a raise) and allowing teachers to carry guns in classrooms (in the same sentence Trump said just this past Sunday, "I don't want to have guns in classrooms. Although, in some cases, teachers should have guns in classrooms").