How the president on the other side of the Moral Majority ended up invited to its unofficial headquarters. Former President Jimmy Carter has accepted an invitation to deliver the commencement address at Liberty University on Saturday. Many will view this announcement as surprising, some even as disappointing for one reason or another. I view it as hopeful. Carter is a progressive evangelical; the Falwell family and Liberty University identify with fundamentalist evangelicalism. Politically, Carter is generally liberal while the Falwells are conservative. Historically, Carter and Liberty’s late founder Jerry Falwell Sr. had differed sharply and personally on multiple issues—most notably…