A paraphased quote from The Daily Show:
It's better to have your enemies inside the tent pissing out, than outside the tent pissing in.
- Lyndon B. Johnson
Anecdote -
Tents Decision: President Lyndon B. Johnson once sought a way to remove J. Edgar Hoover from his post as the head of the FBI. When the problems involved in such a plan proved insurmountable, LBJ philosophically accepted Hoover's presence: "It's probably better to have him inside the tent pissing out," he reasoned, "than outside pissing in."