Frum warns the GOP against focusing solely on immigration:

Any idea that the immigration issue – and the immigration issue alone – would enable Republicans to staple a good chunk of the Latino vote to the conservative coalition -without changing anything else - is a dangerous self-deception.

It's necessary of course to refrain from insulting Latinos, or, for that matter, anybody. But the crying need in the GOP is for a more middle-class orientation to politics, one that addresses concerns like healthcare as well as debts and deficits. But the ideas that dominated the past four years won't become more attractive if all conservatives do is translate them into Spanish.

Earlier Dish on the GOP's demographic difficulties here.