Crane contributed heavily to Woodrow Wilson's 1912 election campaign. Wilson rewarded Crane with appointments to the 1917 Special Diplomatic Commission to Russia, known as the Root Commission, as a member of the American Section of the Paris Peace Conference, and to the 1919 Inter-Allied Commission on Mandates in Turkey that became known as the King-Crane Commission. While the commission was originally proposed by the US to develop an international consensus on the future make up and status of postwar Middle East nations, the commission quickly became a US-only sponsored effort. With the appointment of Crane as co-head of the commission, it set about to issue a report to inform US policy makers. In respect to the creation of a Jewish state in the Middle East, the report cautioned "Not only you as president but the American people as a whole should realize that if the American government decided to support the establishment of a Jewish state in Palestine, they are committing the American people to the use of force in that area, since only by force can a Jewish state in Palestine be established or maintained." Crane opposed the establishment of a Jewish state in the Middle East. He was a passionate spokesman for the independence of the Arab states.