Hmm. I don't agree with him on Biblical infallibility, but politics is not about working with those with whom you already agree.
Fundamentalism is not the problem here. The real political problems occur when such a belief is usurped to support a narrow set of destructive political goals. I hope that men like this can channel fervor toward more constructive struggles.
If we are going to form a coalition to achieve real progress on issues like global warming we can't be too picky about who we will allow to work with us.