Even using their phony models they admit the most draconian laws would reduce the rise of CO2 by a tiny, insignificant amount. All you have to do is point that out and their political argument falls apart.
Also, you have to understand the real down and nitty gritty reason that sheeperal support anything.
They want to feel self-righteous for believing and supporting it.
And there’s no amount of evidence or argument that shakes that motivation.