OKLAHOMA CITY (AP) — Oklahoma's attorney general says his state and others are suffering from the export of marijuana from Colorado and wants the U.S. Supreme Court to consider whether Colorado's pot market violates federal law.

Attorney General Scott Pruitt filed a brief Wednesday in the case in which Oklahoma and Nebraska want the nation's highest court to declare Colorado's pot legalization unconstitutional.

The U.S. Department of Justice has argued that Colorado isn't directly responsible for third-party lawbreakers who traffic marijuana and that there's not sufficient reason for the high court to consider the challenge.

Pruitt claims Colorado has created a "massive criminal enterprise" and is actively facilitating the purchase of marijuana by residents of neighboring states.