The betrayal of the RINO Senators will have less of an impact on whether the law is passed, given that the GOP controlled House can still block it, than on the 2014 mid-term elections. There are quite a few Democrat held, red state Senate seats up for grabs. They can now deflect criticism for their support for this 2nd amendment assault by pointing to “conservative” Republicans who voted for this travesty. You never give political cover to your enemies. Unless you’re the Stupid Party.
Just wait. More turncoats will be revealed when they rush amnesty through Congress.