The Struggle for Independence 181 pressed on with a policy at least as comprehensive as the White Paper of 1922 can warrant. The Arabs, with unrelenting opposi- tion, have refused to accept that document and have prosecuted a political campaign designed to counter Jewish activities and to realize their own political ambitions/ The Commission made four main recommendations: (i) A clear statement of policy with the least possible delay, including a definition of the meaning of the passages in the Mandate which purported to safeguard the interests of the 'non-Jewish' communities. (2) A revision of the immigration regulations to prevent a repetition of the excessive immigration of 1925/6 which had re- sulted in considerable unemployment, and to provide for consulta- tion with non-Jewish representatives with regard to it. (3) An expert inquiry into the prospects of improving Arab agricultural methods, and the regulation of land-policy according- ly. (4) A reaffirmation of the 1922 statement that 'the special posi- tion assigned to the Zionist Organization by the Mandate does not entitle it to share in any degree in the government of Palestine5. Sir John Hope-Simpson, who was sent to Palestine to conduct the agricultural inquiry, reported very conservatively on the ex- tent of lands suitable for development. He did agree that "with thorough development there will be room, not only for all the present agricultural population on a higher standard of life than it at present enjoys, but for not less than 20,000 families from out- side*; but pending the completion of this development he was opposed to the admission of any more Jews as settlers on the land, as tending to displace Arab cultivators* The Passfield White Paper of 1930, based on these two reports, restated the words used by Prime Minister Ramsay MacDonald a few months earlier: 4A double undertaking is involved, to the Jewish people on the one hand, and to the non-Jewish population of Palestine on the other', and added that much of the recent agitation had arisen from the failure, both by Arabs and by Jews, to realize the limits imposed on British policy by this double undertaking. A new Department of Development was to be given control of all disposition of land, and land-transfers would be permitted only in so far as they did not interfere with that authority's plans; any state land becoming available should be earmarked for the settlement of landless Arab cultivators.