Noteworthy that the US Government was under the impression they couldn't outlaw the sale of alcohol without amending the Constitution, and did so. They did so because the power to outlaw a recreational drug didn't reside the Constitution. That makes it strictly a state affair. Yet, somehow, years later, the US Government decided to outlaw pot, and the fact that said authority didn't reside in the US Constitution didn't stop them. They felt no need to amend the Constitution to permit them to outlaw it.
