ويستند هذا التدبير إلى الأحكام المنصوص عليها في المرسوم السامي رقم 597 لعام 1984، وهو قانون الأجانب، الذي ينص في البند 1 من المادة 26 منه على ما يلي:
This measure was based on the provisions of Supreme Decree No. 597 of 1984, the Alien Affairs Regulation, article 26 (1) of which stipulates: “Entry into the country is denied to anyone who propagates or promotes, in oral, written or any other form, ideas intended to destroy or alter by violent means the social order of the country or its system of government, anyone who is accused of criminal activities or is reputed to be an agitator or an activist and, in general, anyone who engages in activities which are classified by Chilean law as crimes against external security, national sovereignty, domestic security or public order and those who engage in acts which undermine Chilean interests”.