Federal Cannabis Law: What Is Still Illegal Under US Federal Law

Despite recreational cannabis being legal in 24+ states, the federal government continues to classify marijuana as a Schedule I controlled substance under the Controlled Substances Act (CSA). This creates a fundamental conflict between state and federal law that affects cannabis businesses, consumers, employees, and banking across the country.

What Schedule I Means

Schedule I substances are defined by the DEA as having: no currently accepted medical use, a high potential for abuse, and a lack of accepted safety under medical supervision. Cannabis has been in Schedule I since the Controlled Substances Act was passed in 1970. Many researchers, physicians, and legislators argue this classification is outdated and not supported by scientific evidence — particularly given FDA-approved cannabis-derived medications (like Epidiolex).

How State and Federal Law Coexist

The federal government has generally adopted a policy of non-interference in states with robust cannabis regulatory systems (known as the Cole Memo framework, later rescinded but effectively still followed by prosecutors). Federal prosecution of individual state-legal cannabis consumers is extremely rare. However, federal law still applies in specific contexts:

• Federal property: National parks, federal buildings, military bases — no cannabis regardless of state law
• Interstate transportation: Crossing state lines with cannabis is federal trafficking
• Federal employees: Subject to federal drug-free workplace policies
• Federal housing: HUD housing and Section 8 recipients can face eviction for cannabis use
• Banking: Cannabis businesses face difficulty accessing banking services due to federal law

The Rescheduling Debate

In 2024, the DEA proposed moving cannabis from Schedule I to Schedule III under the CSA. Schedule III classification would acknowledge medicinal value and reduce penalties for federal possession, while still maintaining federal controls. Full descheduling (removal from the CSA entirely) would require Congressional action. The SAFE Banking Act, which would protect banks serving cannabis businesses, has passed the House multiple times but has stalled in the Senate.