Haig Convention
Refers to an international agreement to safeguard wayward United States presidents from prosecution for their crimes.
Da Haig Convention may indeed have shielded da likes of "Ol' Tricky" and "Free Willy" from answering for their horrible breaches of public trust, but it also caused a noticeable surge of additional and widespread government corruption, since da perpetrators of said subsequent illegal/unethical shenanigans saw how easily their commanders-in-chief had been let off da hook regarding their misdeeds, and so they figgered dat they themselves could probably get away with getting their own hands dirty.