The pot law violated Federal statutes on narcotics!
So a simple federal law is all that it takes to ignore state's rights? I say we pass a simple federal law so that every state has to give their electors to the popular vote winner.
Yes, Federal statute is superior to state statute. Its called the Supremecy Doctrine. The opposing doctrine is the Doctrine of Nullification, which has been rejected and discredited for almost 200 years.
Nullification of
unconstitutional laws was used by states regulary, both North and South, in the 19th century, at least until the civil War.