Dreyfuss is a mixed bag, which is actually a compliment for an actor. If you expect him to be conservative, he will disappoint you. But he also is no brain-dead doctrinaire liberal. Remember that he went to a Ted Cruz rally during the campaign and seemed to have a truly open mind about it. I’ve always liked him as an actor and am glad that at least one actor I like isn’t spewing 100% liberal BS.
Don’t mistake Dreyfuss for a Constitutionalist, his vision of government’s role is much closer to F.D Roosevelt than Reagan. However he is committed to open debate about ideas and free expression, which makes him as rare as a unicorn in SJW dominated leftist politics these days.