In the U.S., cannabis legality depends on what you mean by cannabis. Federal law still lists marijuana as a Schedule I controlled substance. States can legalize medical or adult-use marijuana, and many have. Hemp and hemp-derived CBD are treated differently: the 2018 Farm Bill removed hemp from the Controlled Substances Act definition of marijuana when it stays at or below 0.3% THC on a dry weight basis.
Federal status
At the federal level, marijuana remains illegal under the Controlled Substances Act. That has not changed even as more states allow sales. Rescheduling talks continue, but I would not treat a proposal as a final rule. Federal agencies still enforce federal law, and crossing state lines with cannabis creates legal risk.
Cannabis Regulation in the US: Hemp, CBD, and State Law
State status
Each state sets its own rules. Some allow only low-THC medical products. Some allow full medical marijuana. Some allow adult-use sales. Others still ban marijuana entirely. Possession limits, home grow rules, licensing, taxes, and where you can consume vary. A legal product in one state may be illegal in the next.
Hemp and CBD are a separate lane
For CBD shoppers, the key distinction is hemp versus marijuana. Federally legal hemp must contain no more than 0.3% THC. That is why most CBD products sold online are hemp-derived. But state CBD rules can be stricter. Some states restrict CBD in food or require permits. The FDA has not approved CBD as a dietary supplement or food ingredient, and it has approved only specific prescription CBD drugs.
- Check the product's THC content and lab report.
- Check your state health department or agriculture department rules.
- Do not assume a product legal online is legal where you live.
What I check before buying
I look for a current certificate of analysis from an ISO-accredited lab, clear THC percentage, and a batch number. I also check state rules for hemp-derived cannabinoids. Delta-8 and similar compounds sit in a gray zone in many places because state laws define them differently. If the label is vague, I skip it.
This is general information, not legal advice. For a specific case, ask a lawyer in your state.