What's Illegal inUnited States?

The single thing worth knowing first: Cannabis is federally illegal even between legal states. Federal property = federal law. It is the kind of rule that looks minor at home and becomes a serious problem at the border or in public, which is exactly why it tops this page.

Within serious offenses, United States treats Open container in car, Kinder Eggs, and Drinking under 21 as off-limits. Carrying or doing any of these can mean confiscation, fines, or detention depending on the case — and a foreign prescription, habit, or "I didn't know" rarely helps once you are stopped. Each entry below links to the official source it is checked against, with the verified ones marked.

Two things travelers regularly get wrong about United States: A medical card from one state does not transfer to another; and Federal drug laws apply on planes and at airports even in 'legal' states. Assumptions like these are how otherwise careful visitors end up in trouble, so it is worth checking the specifics rather than guessing.

One important caveat: Cannabis legality varies by state — federal law still classifies it as Schedule I. Laws and their enforcement can shift between regions and over time, so treat this page as a sourced starting point and confirm anything borderline against the official links before you rely on it.