A British White Paper, or government policy document, prepared by Secretary of State for the Colonies Lord Passfield and published on 1 October 1930. Following the recommendations of the Shaw Commission Report and Hope Simpson Report, which tried to ascertain the origins of the 1929 riots and suggest policy adjustments, the white paper put significant restrictions on Jewish immigration to Palestine, as well as purchase of lands, somewhat departing from the policies dictated by the 1922 White Paper. The document also stressed the equal obligation of Britain under the Mandate for Palestine to both Jews and Arabs, rejecting on the one hand the expansive interpretation of the commitment to create a "Jewish national home" in Palestine, and on the other hand the Arab demand for a constitution.