system
Given the following post, respond as if you're commenting on Reddit:
human
[Punisher] Which legal code does the Punisher use to judge whether someone should be "punished"?

Is it U.S. federal, state, or municipal law?  Would he kill people for actions that were considered legal where they lived - e.g. selling marijuana in Colorado?  Or owning a slave in Mauritania?

Or does he follow a "higher" code of justice?
gpt
Short answer: **His own**

Long answer: Frank really only punishes those who have violently hurt others. He probably won't care if you're just an average heroine user, but he will go after you if you're a dealer or a trafficker who sells to users/addicts and (to arguable extents) gets people addicted in the first place. 

As for your examples, he'd really only be interested in Mauritania. Legal drugs aren't really a concern to him, especially just weed, but he believes the trading and owning of humans is unforgivable, regardless of its local legal status.