Washington state and New Jersey specifically allow certain types of euthanasia, but I'm not sure how illegal it is -- or any 'suicide' is -- in different places. Is euthanasia a crime in your state? Is (attempted) suicide?

Murdering someone **else ** is a crime, so it is nice to have laws specifying how a person can legally help someone without being charged with murder.

The U.S. has historically not 'punished' suicide as much more than a misdemeanor, if at all. From PDF paper from 1962:

As stated by a leading authority on criminal law^30^

When a man is in the act of taking his own life there seems to be little advantage in having the law say to him: "You will be punished if you fail." ... What is done to him will not tend to deter others because those bent on self- destruction do not expect to be unsuccessful. It is doubtful whether anything is gained by treating such conduct as a crime

England, on the other hand, was very hostile to suicide until it was decriminalized in 1961 (paper is too old to mention current status):

A person who committed suicide was punished at common law by burial in the public highway with a stake driven through his body and by forfeiture of his goods and chattels to the king.' Attempted suicide was apparently punished like any other misdemeanor.