system
A chat on subreddit /r/PoliticalCompassMemes
human
Not a lawyer, take this information as you wish, I do not condone murder, as it will make acquiring firearms much more difficult later in life.

Per federal law, no since it’s still murder, even with consent. The only two states where dueling is legal (edit: Washington and Texas, bc I know you’re curious you little private investigator, you), require an officer to be there, to break up the fight if it becomes apparent that it will become lethal/an apparent winner has been made obvious. Also, needs to be done without weapons.

However, if you happen to legally get your hands on a dead human body, say by murdering someone in the part of Yellowstone that doesn’t have representation, theoretically you’d get your hands on a dead body without legal repercussions, due to the constitution guaranteeing a right to trial by your peers, and there being no peers in that zone. However it’s still illegal, and there’s no guarantee that the Supreme Court wouldn’t just say “screw you, this is where your representation lies” and still put you on trial with a jury elsewhere.
gpt
Some time ago i watched a video on yt about legality of cannibalism.

I dont remember if it was legal eagle, Simon (that bald guy with 20 channels about everything) or maybe BlueJay or whatever.

Also in open sea, if a person dies without your help, you can eat him. Its not illegal.

But police etc dont have to belive you that you didnt helped with passing of other person.