Unfortunately, I fully expect several Republican Senators (starting with Specter) to be completely ignorant of the actual facts, and will chime in with the Democrats on this
And why not? Specter is the mother of all RINOS.
Those RINOs aren't chiming in with Democrats out of ignorance. It's because their sympathies lie with the Democrat's left wing anti-American agenda rather than the Republican pro-American agenda they claim to support.
Sometimes I think we would be better off if the RINOs in Congress just came out of the closet and switched parties. But then considering the way power and control is proportioned in Congress by party label I suppose it's better to leave things as they are and work to replace RINOs with conservative Republicans wherever possible. Unfortunately that doesn't seem to be possible in cases like Spector who have been in office so long they are seen as permanent institutions by their constituents rather than as public servants who are supposed to represent the views of those same constituents by their votes and actions in Congress.