Donald Trump will meet behind closed doors on Tuesday with hundreds of the nation’s most prominent Christian conservatives — megachurch pastors, religious media personalities, theological writers, heads of social conservative organizations and more. Many of these Christian leaders supported other candidates, including Ted Cruz, Ben Carson and Carly Fiorina in the primary season. Some have criticized the presumptive Republican nominee for his rhetoric about race and about women, his lack of an anti-abortion history and even his ownership of casinos. What would Trump have to say to earn their support on Tuesday? Several people who will be attending the meeting...