The Arms Trade Treaty (ATT) is the first legally binding international agreement to regulate the global trade in conventional arms by establishing common international standards for countries to incorporate into their national transfer control systems. U.S. industry played a key role in the ATT negotiations, working to ensure there were no unintended consequences that would undermine the legitimate trade in conventional weapons or create additional costs or burdens for industry doing business in legal and responsible ways. This report highlights industry’s motivations for effective ATT implementation and underscores how the defense industry can serve as a resource for national governments in better understanding the practicalities of the international arms trade and supporting ATT universalization.