His skin color happens to be white, but aside from that, the GOP establishment does not like him and fought very hard to keep him from being the Senator from Florida.
If they are suggesting him as VP, it’s only an attempt to neutralize him.
Yeah, sure, the GOP Establishment would have gone with the transparent RINO for senator who had been the early favorite if they could have got away with it, but Rubio has the advantage of being Hispanic AND playing the get-along game with the Establishment. Remember, he’d been speaker of the FL house of representatives.
Particularly, he’s ‘Jeb Bush safe’ to the Establishment re: illegal immigration and amnesty.