Paul is kidding himself if he thinks anyone with an R is going to get more than 5% of the black vote. They are a monolithic group that takes orders from their masters at the Democrat plantation. They're content with being taken care of by the government and will do as they are told, they have been for the past 50 years. There are some exceptions but not many.
Same goes for the Hispanic vote. Signing on to immigration reform won't get him anywhere either. Even if he DOES get some of the Hispanic vote, he will lose more than that from those against rewarding illegals with citizenship. Somebody who sticks to their conservative principals can win, not someone who acts like a liberal.
I'm not convinced you're right.
I think more blacks than not would like to have cush office jobs that pay 6 figures, but they're stuck with the belief that "******" is holding them back, rather than recognizing that Leroy is holding his own people back.
It's a cultural issue. The mentality needs to change. I'm optimistic because blacks are listening to Paul. They're not listening to even a lot of the black republicrats.
As far as immigration goes I haven't heard him say anything pro-amnesty, so I'm not sure you're correct there. I agree with your premise though that "immigration reform" as it has been presented is a democrook scheme and should not even be compromised on. Certainly something needs to be done, but the democrook scheme is not it.
I don't think he's betraying conservative priniples. Individual freedom and smaller government are conservative principles.
Government control and central planning are bed wetter policies. i don't see him embracing those.
There are certainly areas of opportunity. For example:
1) School vouchers - There is a lot of support in black communities to get their kids out of poor black schools, the Democrats crap on them.
2) Morality - There are a lot of religious blacks who don't agree with Democrats on a lot of issues.
3) Out of wedlock Paternity - Black males have kids then aren't held accountable to support them.
By focusing on opportunity and responsibility for actions instead of dependency and government control, a good candidate could pull in a lot more black vote, though I don't think any Republican could get a majority, but everyone they pull over cancels out someone they didn't.