Fruit of the poison tree. If Mueller is found to be an invalid investigation, then any evidence his team has found and used on Manafort, Cohen, Flynn, etc. is invalid as well and cannot be used in court.
Fruit of the poison tree. If Mueller is found to be an invalid investigation, then any evidence his team has found and used on Manafort, Cohen, Flynn, etc. is invalid as well and cannot be used in court.