Mccain has been a cap and trader for a long time.
Clean coal, etc. would be good and needs not “global warming” to be attractive.
The front running GOP candidates, McCain included, all seem to be practicing a form of junk science Judo.
They say “OK, you care about the environment, how about more nuclear power plants and clean energy.”
I’m sure that is what their political consultants and advisors tell them to say.