Hispanics don't vote in large numbers and Chicanos -- the only category Trump might be especially unpopular with -- overwhelmingly don't live in swing states or turn out to vote. Muslims don't make up a large voting block and already are overwhelmingly Democrats.
I'm not predicting a Trump victory, but you are far too sanguine about his chances and the underlying demographic realities.
I guess the newspaper articles claiming you need certain percentage of Hispanics to win the presidency have lied. I will not debate you on this point since I'm no expert. Add to the fact that he has pissed off more people than just Latinos and his chances appear slimmer. But maybe I'm just misinformed.
As far as U.S. presidential politics goes, meh, it's 10 months from the election, we don't even know who the candidates will be for either (especially the GOP), and the only people who should be sweating are S. Korea and Japan.
It's far more of an issue for the region.
For those of you who apparently missed the "American Politics" course in your higher education, Democrats have been better at resolving domestic challenges while Republicans have done better on international issues.
Si tacuisses, philosophus mansisses.