Your question is not very clear. If you are talking about possession of a controlled substance, then the sentence should be changed even though it was a crime at the time of possession. some more conservative states cannot be expected to do this, however.

If you are talking about manufacturing and selling the product, then the odds are slim.

Sorry, I removed this comment.

The question as formed in the title is fine. However, discussing the current or future status of marijuana is not allowed because of our no current events rule.

You are allowed to edit the question to conform to sub rules, and resubmit it, however.