Everyone is still talking about Politico’s earth-shaking scoop that the Supreme Court may be on the verge of overturning Roe v. Wade and any constitutional right to an abortion. Just how did Politico get its hands on Justice Samuel Alito’s draft opinion? A popular D.C. parlor game at the moment is guessing the identity of the leaker. The most popular theories point to one of the 37 law clerks currently serving the nine justices. But I’ve heard the reasoning—everything from the presence of staple holes indicating printouts to the evolving cultural attitudes of Millennials—and I’m not convinced. So let me just offer four reasons the “leak” might have come from outside the building.