>In the end, it doesn't really matter who inserted the language. All of the Republicans in the legislature are voting for it, so pick any one of them (without loss of generality) to serve as an example.

It's not impossible that one of the Democrats did it, so they could pretend to oppose it. Controlled opposition isn't a new thing.

If one of the Republicans did it, can they have the numbers to pass it, why wouldn't one of them take credit for it?