World Rugby Handbook
BYE-LAW 7. BINDING AGREEMENT
Membership of World Rugby by a Union or Association shall be effective as an agreement binding such Union or Association (which agreement requires such Union or Association to similarly by agreement bind its affiliated membership which such Union or Association undertakes to do) to abide by the Bye-Laws, Regulations and Laws of the Game and to accept and enforce all the decisions of World Rugby, Council and the Executive Committee (as the case may be) in respect of the playing and/or administration of the Game throughout the country or countries within the jurisdiction of such Union or Association. Any breach of this agreement or any conduct which may be prejudicial to the interests of World Rugby or of the Game shall render such Union or Association liable to disciplinary action in accordance with Regulation 18 of the Regulations Relating to the Game.