Through the efforts of the British Minister at Tangier, Sir John Drummond Hay, who had negotiated the Treaties of 1856 and who was strongly opposed to the abuses of the Protection system, a Conference of the Powers and other interested States was held at Madrid in 1880 with the object of introducing reforms.[102] A new Convention, containing a few fresh restrictions, was agreed upon, but, as a matter of fact, the Conference was a failure, owing to the reluctance of France to abandon a system which gave her an advantage against Great Britain in promoting her influence in Morocco.[103] For obvious reasons, Jewish influence was also largely used to the same end. The Jewish factor of the problem came out very prominently in the debates of the Conference. All the protégés referred to by name were Jews, such as the families of Benchimol, Moses Nahon, David Buzaglo, and Isaac Toledano.[104] One of the few reforms carried out by the Conference was the abolition of hereditary protection. An exception was, however, made in the case of the Jewish family of Benchimol, whose rights in this respect had been guaranteed in the Convention of 1863 with France, and a special reservation to this effect was inserted in the new Treaty.[105] The Conference also dealt with the general questions of Religious Liberty in Morocco and of the treatment of native Jews. In 1864 Sir Moses Montefiore, as President of the Jewish Board of Deputies and with the support of the British Government, had undertaken a mission to Morocco in order to secure an improvement in the treatment of the non-Mohammedan population, and more particularly the Jews. He succeeded in obtaining from the Sultan a remarkable Edict assuring to the Jews a perfect equality of treatment with all the other subjects of the Sultan.[106] This Edict had not been observed, and, at the instance of the Pope, the Madrid Conference adopted a Declaration calling upon the Shereefian Government to give effect to it and at the same time to assure Religious Liberty to all its subjects. The result was to extract from the Sultan a formal reaffirmation of the Montefiore Edict.[107]