When Gov. Tom Wolf legalized medical marijuana, Pennsylvania became the 24th state to legalize the use of medical marijuana despite the direct conflict with marijuana's classification as a controlled substance under federal law. By way of history, on Sunday, April 17, 2016, Wolf signed the Pennsylvania Medical Marijuana Act (hereinafter MMA) enacting a sweeping change in the commonwealth, legalizing the use of medical marijuana per the parameters of the MMA, despite the ongoing prohibition of same under federal law.