Former Deputy Attorney General John Yoo said Thursday that Mueller team prosecutors likely hoped to find more charges to bring against Roger Stone but came up with "dry holes."

Yoo said Mueller and his soon-to-depart top prosecutor Andrew Weissmann don't appear to have found anything relating directly to Russia collusion.

Weissmann, who prosecuted New York City Mafia members and won convictions against Enron executives, is said to be departing the Mueller team. 

Yoo said that Weissmann's departure may show that Mueller is "tying up all the loose details" despite perhaps not finding collusion with regard to Stone's prosecution.

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Stone, a longtime friend of Trump who also served in a minor role on President Richard Nixon's campaign, is being charged with lying to Congress and witness tampering.

Judge Amy Berman Jackson, an Obama appointee who is also presiding over Paul Manafort's Washington, D.C. trial, was reportedly not happy about Stone publishing a book about the Russia probe.

Stone appeared before Jackson for a status hearing on Thursday.


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