Although the remarkable dumpster fire that is the Jussie Smollett self-beclowning saga has captured all the headlines this week, the legally murky kerfuffle that is the so-called "ISIS bride" — Hoda Muthana — is probably the more nationally pressing story. Muthana was born in the U.S. to a father who was a Yemeni diplomat. All sides of the constitutional debate regarding the original public meaning of the Fourteenth Amendment's Citizenship Clause concede that if the Clause's intermediary phrase, "subject to the jurisdiction thereof," means anything at all, it refers to the fact that the children of foreign diplomats are not...