Mexican Border:
He wants to close the barn door after the horse has left the stable. There are a _ton_ of Mexicans in the U.S. illegally, but according to
Pew Research, the number is declining. They're actually going home on their own. The wall is going to keep them here.
Abortion:
I understand. This is a very hard issue for me. I disagree, and I'm pro-choice, but I understand. I don't know his exact stance, but I hope he makes exceptions for things like the life of the mother, rape, and incest.
ObamaCare:
If he's aiming for a more Sanders-like plan, I could see myself getting behind him on this issue. But I don't know how he plans to get healthcare to every American, so I'm cautious about backing his opposition to the ACA. I mean, I can't say I like it, either, but... c'mon, now. Remember back when you could be rejected for "preconditions?" That was nuts. I'd never want to go back to the before-times.
Marriage:
He personally opposes gay marriage, but I don't understand why he takes the extra step to saying that the law should discriminate. I'd have no problem with a law that protects religions or groups within religions that refuse to perform marriages based on sexual orientation (or race, or whatever). But I think he sees legislation as a hammer, and it's the only tool in his toolbox, so everything (including gay marriage) looks like a nail. I'd have a hard time supporting a candidate who was for legislation designed to discriminate.