He will just as soon slap a tariff on Japanese furniture makers because their own market is 'closed' (sic), to American furniture makers from North Carolina. He'll rant and rave about unfairness and closed markets. It won't occur to him that American manufactured furniture is too damn large to even fit in a tiny average Japanese home so why would they in the free market even purchase this stuff. And when told to modify their product for the Japanese market, refuse to because "that's how we've always made our fine product there in N.C.". ( True story, 1991.)
Trump has not learned the ground game either in electoral politics or trade realities, and will just cry "Unfair!" like liberal-raised kids who pout when they lose a contest at school.
Trump is running as Republican but the GOP Party is united against him and trying to steal the nomination from him.