Trump can easily do better among the minorities, because Trump is quite willing to pit local minorities against foreigners in a way that Romney wasn't willing to. Romney's solution to falling minority opportunities was to 'provide opportunities'. Trump's will be to 'stop "unfair" competition' from elsewhere. The woo of the nationalist is pretty strong if you think you're within the nation. The Democrat's only real pushback is to try to conflate Trump's statement about racial groups elsewhere with how he'll inevitably treat racial groups locally.
(Hint: he aggressively commented on the NFL protests, and took a side)
(Hint: he aggressively commented on the NFL protests, and took a side)