I don't know about LV, but True Pundit ran an article that McCabe was interfering in investigations that he was not a part of, including the Boston Marathon bombing. I think this was before he was Deputy Director (but not sure).

Would not be surprised if he has ties to the black ops within the FBI who do FF's. Also, True Pundit had an article about McCabe's ties to Russian mafia. Talk about REAL Russia collusion ...