Aaron Blake: “Once you agree to cooperate with the government, your interests no longer align (and often clash) with other subjects of the investigation, and such ‘joint defense agreements’ are usually instantly voided. That’s what happened when Michael Flynn flipped last year and with Michael Cohen this year. But that’s not the same as saying anyone involved will be punished — especially if they never misrepresented what they were doing.”
“There is another possible legal consequence, though, and it involves the broader obstruction of justice investigation. Basically, Mueller’s team could decide that this arrangement has amounted to witness tampering or obstruction, or that it adds to a mountain of evidence on that latter count.”

