Mitt Romney was the only GOP candidate last time that took a hard line on illegal immigration. And he won the nomination because of that. In the general his never made that an issue and it cost him the election. Trump will make it (illegal immigration) an issue and he will win.
The man is a shoe in if they don't shoot him.
Like everything else Romney says, he didn’t mean a word of it. He would have signed the Rubio Gang bill had it passed the House, made more likely if he had won.