Rush's retort to Barry is what pre-empts the GOP members from criticizing El Rushbo. By giving a response that called out the GOP, Rush is daring the GOP to side with Barry against him. Now not a one of them will criticize Rush....though they aren't likely to come to his aid either. They'll let Rush fight this one by himself.
Having said that, I suspect Bambi's handlers have told him not to ever mention Rush by name again.