Republican presidential frontrunner Donald Trump insists that his tax cut plan  would increase tax revenues , because growth! “Overall, it’s going to be a tremendous incentive to grow the economy and we’re going to take in the same or more money. And I think we’re going to have something that’s going to be spectacular,” Trump said. “We’re going to grow the economy so much.” Which would be great. Except, this trickle-down fantasy  never, ever works . That said, it’s not luck Trump’s tax plan is any stupider than any of the other Republican tax plans. So there’s that.