AdvertisementTrump's Populism Is Transforming GOP's Economics, Adviser Says07:17Download AudioResumeNovember 29, 2016NPR StafffacebookEmailDonald Trump speaks to supporters at a rally Oct. 10 in Ambridge, Pa. Stephen Moore, a senior economic adviser to the president-elect, recently said Trump's party is no longer the party of Ronald Reagan and free trade. (Getty Images)