Judge Emmet Sullivan (l) and Robert Mueller (Credit: public domain)
On December 12th, 2017, Judge Sullivan ordered Robert Mueller to turn over to the Flynn defense team, anything that could be considered exculpatory:
(…) if the government has identified any information which is favorable to the defendant but which the government believes is not material, the government shall submit the material to the Court for in camera review. (Order of Judge Sullivan in US v. Flynn, 12/12/2017)