I wouldn’t be surprised to see Obama emulate his idol, Roosevelt, and legalize, regulate, and tax Marijuana. Prohibition ended Dec 1933.
FDR did not “legalize, regulate, and tax Marijuana”, ending marijuana prohibition. It was legal at the Federal level but unregulated prior to Henry Anslinger’s (head of the Federal Bureau of Narcotics - predecessor of the Drug Enforcement Agency - and the passage in 1937 of the Marijuana Tax Act. At the time the 10th Amendment to our Constitution was still in force. Remember that alcohol prohibition required a Constitutional Amendment, not just a law. Congress couldn’t just pass a prohibition, but the tax was effective. It was high enough to drive the price up, if someone actually paid the tax the individual State could then move in and make an arrest under existing State laws.