^^
Khat is a plant that contains cathinone, which is a schedule 1 stimulant.
However, Erowid says this about khat's legal ambiguosity:
"Khat is not specifically listed in any schedule in the United States. However the federal government appears to be treating Khat as equivalent of Cathinone, one of the chemical constituents in the plant. Cathinone is Schedule I in the United States, making it illegal to buy, sell or possess.
It is reported that the cathinone in Khat breaks down quickly and after only a few days, only cathine is left.
Individuals in the US have been successfully federally prosecuted for possessing and distributing dried khat leaves intended for ingestion. Dried leaves, intended for ingestion, courts will likely find constitute a "material or preparation" containing a schedule I substance, and thus controlled under the Controlled Substances Act (CSA). Cases such as: an Oregon man convicted in 2002 for 'intent to distribute' dried leaves. For live plants, not intended for ingestion, the law is ambiguous and has not yet been fully resolved.
The DEA considers khat "an illegal plant", but the DEA's views are not law and do not have the force of law. See DEA's 2002 Briefing on Khat for more information on their view of khat. In two entries in the Federal Register, the DEA mentions khat and their view of its legal status, but in the scheduling of cathine and cathinone, the DEA chose both times not to list the plant itself and thus the plant remains in a legal grey area."