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>> you know, wolf, above all else, we should note that we need more information about this, the terms of this subpoena, because it's entirely possible here that the vice president and his team requested a subpoena before proceeding. i know there have been negotiations over his appearance or handing over documents, and many people who are the subject of investigations often sort of ask for a subpoena, because then that gives them more of a basis for complying, so we'll see. but certainly, this is profound, wolf, as many of the other occurrences related to this whole legal matter have played out. this is a profound moment for the american legal system. >> but you agree, elliot, the former vice president could be an absolutely key witness in these proceedings, possible proceedings, against the former president of the united states? >> he absolutely can, and you know, to jessica's point, he very well may have some claims with respect to privileges over the documents, depending on the nature of documents and the