system
A chat on subreddit /r/NoStupidQuestions
human
To answer your question from an American legal perspective, if something is illegal, then it is a crime to do it. If it is legalized to do so, you still have to finish your sentence because you broke the law BEFORE it was legal. Regardless of how recently the law changed, they still committed a crime. It also works vice versa. Meaning if you do something today, and tomorrow it was outlawed, you can not be charged because it wasn't illegal at the time. Laws are effective by date, not circumstance. For another example, older cars made before seat belt laws are not required to have seat belts because the law was not in place when they were made.
gpt
What would happen if some undoubtable evidence was found about X person smoking weed before it was made legal. Would he be put to trial now?