In the U.S and the federal government have their own set of criminal laws, unlike Canada. They both contradict and it resulted to get things messy. Cannabis is one huge sample for this contradiction.
While several states have legalized cannabis, it’s still federally illegal, which complicates the U.S. cannabis economy, due to cannabis cannot be legally cross-state, any state that is legalized has to have its own self-contained cannabis economy which resulted to endless inefficiencies.