Captured Agency
An organization controlled by the group it is supposed to regulate.
Person 1: The hens are safe: the Federal Fox Stopping Agency (FFSA) is guarding the entire hen house.
Person 2: Um, the FFSA is a captured agency; everyone in charge there *is* a fox.

Person 1: Whatever, I trust them so much.

Person 2: Your hens, your choice. I'll put mine somewhere else.
Person 1: Not for long. Thanks to a new federal law, ALL hens must now be guarded by the FFSA only. If you try to put them somewhere else, the FFSA is fully authorized to eat them.

Person 2: There's your proof of a captured agency.
Person 1: Whatever, I trust them so much.