The U.S. Gov't. controls the export of defense-related items to minimize the security risk such exports may pose. The U.S. export control system is primarily divided between two regulatory regimes, one managed by the State Dept. for defense items & another managed by the Commerce Dept. for dual-use items that have both mil. & commercial applications. Determining which dep't. has jurisdiction over an item & how that item is controlled is fundamental to the U.S. export control system. This report assesses how gov't. departments assist co's. in determining the proper controls for defense-related items, specifically: (1) how Commerce implements the commodity classification process; & (2) how State implements the commodity jurisdiction process.