A land without a people for a people without a land throw upon the Jews the actual manual labor of regeneration and prevent them from exploiting the "fellahin", whose numbers and lower wages are moreover a considerable obstacle to the proposed immigration from Poland and other suffering centers". In 1914 Chaim Weizmann, later president of the World Zionist Congress and the first president of the state of Israel said: "In its initial stage Zionism was conceived by its pioneers as a movement wholly depending on mechanical factors: there is a country which happens to be called Palestine, a country without a people, and, on the other hand, there exists the Jewish
Chaim Weizmann of Mandate Palestine. In 1942, Weizmann was invited by President Franklin D. Roosevelt to work on the problem of synthetic rubber. Weizmann proposed to produce butyl alcohol from maize, then convert it to butylene and further to butadiene, which is a basis for rubber. According to his memoirs, these proposals were barred by the oil companies. In 1939, a conference was established at St James's Palace when the government drew up the May 1939 White Paper which severely curtailed any spending in the Jewish Home Land. Yishuv was put back to the lowest priority. At the outbreak of war the