is Decriminalization of some drugs (marijuana, THC, etc a state, federal, or both issue

The decriminalization of drugs like marijuana and THC can be both a state and federal issue. States have the ability to decriminalize certain drugs within their own jurisdictions, leading to varying laws and regulations across the country. However, the federal government also plays a role in drug policy, and federal laws still classify marijuana as a Schedule I controlled substance. This disconnect between state and federal drug laws can lead to conflicting practices and enforcement.