Many Americans reject Trump because of his meanness, his misogyny, his ethnic demagoguery, and his squalid and abusive personal behavior.
But most [White Evangelical Protestants] don’t. In a September poll for the Public Religion Research Institute, two-thirds of white Catholics and white mainline Protestants agreed that Trump had “damaged the dignity of the presidency.” Most WEPs said he hadn’t.
Trump’s Christian Apologists Are Unchristian Polls show that on immigration, race, and poverty, white Evangelical Protestants have surrendered moral judgment and social responsibility [November 25, 2018]
There’s no attempt to prove any of the above, no “links in original”—Saletan just assumes that Trump is mean, misogynistic, demagogic, and squalidly abusive—in ways Obama and the Clintons are not—and everybody just knows that.
However, later he does get into some thorough linking in a paragraph Trump and the white Evangelicals that he (Saletan) hates, because they (WEPs) don’t have Trump, their own race, or America:
I take two lessons from these studies of white evangelicals. One is that the “Christian right,” as represented by Trump apologists, has betrayed Christianity. Trump presents a new, or in some cases newly revived, set of moral issues. Theft, open bigotry, race-baiting, explicit discrimination, boastful misogyny, sexual abuse of minors, the promotion of political violence, and the deliberate killing of innocent people are now on the table. Jerry Falwell Jr., Robert Jeffress, Franklin Graham, and others who stand with Trump in these fights should no longer be taken seriously as spokesmen for a faith. They’re purveyors of evil. [Emphasis added, links in original]
Let’s unpack that linkagery
The point is that these are the kinds of things that they call lies when Trump says them. It's also the kind of thing they call "Islamophobia" when it's directed against Muslims. But Christophobia—fear and hatred of Christians--is practically not a word.