he advocated a union with Iraq. Churchill rejected both demands. Responding to Abdullah's fear for a Jewish kingdom west of the Jordan, Churchill decreed it was not only not contemplated "that hundreds and thousands of Jews were going to pour into the country in a very short time and dominate the existing population", but even was quite impossible. "Jewish immigration would be a very slow process and the rights of the existing non-Jewish population would be strictly preserved." About British policy in Palestine, Herbert Samuel added that "There was no question of setting up a Jewish Government there ... No land would be taken from any Arab, nor would the Moslem religion be touched in any way." in London The fourth congress, on 25 June 1921, voted to send a six-man delegation to London which left Palestine on 19 July 1921. After a short visit to Cairo, the delegation went to Rome where they were received in audience by Pope Benedict XV who expressed sympathy with their cause. The delegation (usually referred to as the Palestinian Arab or Muslim-Christian Delegation) arrived in London on August 8. Three members of the delegation went to Geneva and joined the Syrian–Palestinian Congress to put their case to the League of Nations and to protest the draft mandate. The president of the delegation was Musa Kazim al-Husseini. Its secretary was Shibli al-Jamal (Dr. Fu'ad Samad, assistant secretary) and the other 4 delegates were Tawfiq Hammad, Amin al-Tamimi, Ibrahim Shammas, Mu'in al-Madi. Three meetings with Churchill were had in August and other discussions and correspondence with Colonial Office officials along with meeting Weizmann in November all of which were fruitless since the delegation effectively wanted the policy abandoned altogether and the British were not prepared to countenance anything other than minor adjustments. Finally, the draft of the proposed Palestine constitution was sent to the delegation in February and their response marks the first document published in the white paper. Jaffa riots The May 1921 riots in and around Jaffa were the subject of a report published on 1 October 1921, determining the main cause as being due to Arab discontent about Jewish immigration and perceived pro-Jewish bias by Mandatory authorities. Its remit was expanded to include looking into any recent disturbances in Palestine so also considered the unpublished Palin report into the April 1920 Jerusalem riots. The White paper was intended to address the issues