Following the 1929 riots, the British government formed a Commission headed by Lord Passfield, which issued a policy paper that called for a Legislative Council in Palestine, and suggested implementation of the Hope-Simpson recommendations that Zionist land purchases and immigration should be restricted. This was the first time the British government had suggested such restrictions. The Zionist movement viewed it as a reversal of the policy of the Balfour Declaration and campaigned against it. In February 1931, British Prime Minister Ramsay MacDonald sent a letter to Zionist leader Chaim Weizmann essentially canceling this Paper’s positions. See “The Passfield “White Paper.” MidEast Web. 24 August 2011. http://www.mideastweb.org/passfieldwp.htm.  http://www.justvision.org/glossary/white-passfield-paper-1930