As we saw during primary season, our president-elect is not free of his own brand of hubris and arrogance, and sometimes it comes before a fall: “You’re likable enough, Hillary” was the prelude to his defeat in New Hampshire. He has hit this same note again by assigning the invocation at his inauguration to the Rev. Rick Warren, the Orange County, Calif., megachurch preacher who has likened committed gay relationships to incest, polygamy and “an older guy marrying a child.” Bestowing this honor on Warren was a conscious — and glib — decision by Obama to spend political capital. It...