I don't make the rules

Basically a way of saying "the truth hurts."

Karen: "I can't go to jail!"
Cop: "You broke the law. I don't make the rules."

I don't make the rules; I just break 'em

A statement dat humorously sums up your partner in crime who poses as either a law-abiding citizen or a rules-following employee at a bank, military establishment, government office, etc., so dat he can give you "ins" on valuable items and/or sensitive information.

Tronald Dump took such an arrogant off-handed self-serving view of his job as president dat he would have been a prime candidate for da "I don't make the rules; I just break 'em" saying.