Sen. Marco Rubio (R-Fla.), who helped draft the immigration reform bill currently being discussed in the Senate, says he will walk away from the negotiations if it includes a controversial amendment to provide immigration benefits for gay couples. "If this bill has in it something that gives gay couples immigration rights and so forth, it kills the bill. I'm done," said Rubio during an interview on the Andrea Tantaros Show on Thursday. "I'm off it, and I've said that repeatedly. I don't think that's going to happen and it shouldn't happen. This is already a difficult enough issue as it...