American resistance to accepting evolution is uniquely high among First World countries. This is due largely to the extreme religiosity of the U.S., which is much higher than that of comparably advanced nations, and to the resistance of many religious people to the facts and implications of evolution. The prevalence of religious belief in the U.S. suggests that outreach by scientists alone will not have a huge effect in increasing the acceptance of evolution, nor will the strategy of trying to convince the faithful that evolution is compatible with their religion. Since creationism is a symptom of religion, another strategy to promote evolution involves loosening the grip of faith on America. This is easier said than done, for recent sociological surveys show that religion is highly correlated with the dysfunctionality of a society, and various measures of societal health show that the U.S. is one of the most socially dysfunctional First World countries. Widespread acceptance of evolution in America, then, may have to await profound social change.Coyne has followup comments here, but no link to the full article.
For Coyne, the implications of evolution are that there is no God, that religion poisons everything, and that we have no free will. He wants the American public to accept these, in order to facillitate his leftist socialist goals.
If the USA is less accepting of evolutionist college professors, I suspect that it is because those professors are so ideologically leftist, anti-American, anti-Christian, and unscientific in their opinions.
Americans do not have any trouble accepting scientific facts. You occasionally hear from someone who doesn't believe in the Moon landing, but those are a small minority. It is those leftist political opinions that sre supposedly implications that they have trouble with.