Winsa S.A. v. Mexico

A Mexican food establishment, Winsa, filed an appeal for legal protection, claiming the Law Regulating Commerce in the Federal District (Ley para el Funcionamiento de Establecimientos Mercantiles en el Distrito Federal) was unconstitutional and violated the Mexican Constitution, which guarantees the right to equal protection. The articles at issue mandate that places selling food and drinks to the public for local consumption must be free of all tobacco smoke.  The Court held that since these articles applied to all commercial establishments and there was no discrimination, the articles were not in violation of the Constitution.