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When is a ‘wall’ not a wall? When it’s in a GOP campaign platform

One of Donald Trump's top congressional supporters believes his U.S./Mexico border wall will be "virtual." But what does that mean, exactly?

U.S. Customs and Border Protection personnel walk along a section of the recently-constructed fence at the U.S.-Mexico border on Feb. 26, 2013 in Nogales, Ariz. (Photo by John Moore/Getty)
U.S. Customs and Border Protection personnel walk along a section of the recently-constructed fence at the U.S.-Mexico border on Feb. 26, 2013 in Nogales, Ariz.Getty Images

Steve Benen is a producer for "The Rachel Maddow Show," the editor of MaddowBlog and an MS NOW political contributor. He's also the bestselling author of "Ministry of Truth: Democracy, Reality, and the Republicans' War on the Recent Past."