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Whats in them that mueller is so interested in? >> reporter: kate, the special counsel has these now the beg question is whether the special counsel will look at them and decide this is some kind offest to tamper with a witness, to intimidate a witness. they have been friend for years, but this mueller investigation has really delivered a blow to their friendship after randy stone and the back channel. here is one of the text messages. he says he got a subpoena from mueller. he says waste of you...