Glenn Simpson, the Fusion GPS founder who sponsored the unverified anti-Trump dossier, claimed in August and again Jan. 2 that the FBI has a source inside the Trump camp who lent credence to the document. When a transcript of his secret August testimony was released on Tuesday, news headlines immediately latched onto the disclosure as a boon to a dossier whose core charges of Donald Trump-Russia collusion have been denied and not confirmed publicly.
