you gfyers crack me up. you don't even have a clue what the fbi does, instead you're scrambling around a dictionary to try to gotcha me on the difference between rules and laws while showing how ignorant you are. you actually think the FBI is a rules investigation outfit?
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The mission of the FBI is to protect and defend the United States against terrorist and foreign intelligence threats, to uphold and enforce the criminal laws of the United States, and to provide leadership and criminal justice services to federal, state, municipal, and international agencies and partners.
https://www.fbi.gov/about-us/faqs