With all due respect lepton, I didn't say anything about Republicans versus Democrats. I'm careful to mention "conservatives." This is because Congress has used its power to override presidential vetoes as recently as recently as Bushes 41 & 43 and Clinton.
List of United States presidential vetoes
I had considered your use of the word ‘conservative’. I still come to the same conclusion.
That said, perhaps some Dems and non-conservative Repubs can be intimidated into doing the right thing.