delegation. Civil service roles Upon his return to Canada, Biggar continued to serve in various senior civil service roles. He was named vice chairman of the Air Board serving under Arthur Sifton, where he organized Canada's Air Department to govern the fledgling aeronautics industry. This was subsequently divided into its civilian (Canadian Air Transport Board) and military (Royal Canadian Air Force) components. Biggar served on the Air Board from 1919 to 1922. Biggar was also retained as counsel to the Department of Justice to represent the Canadian government on a number of cases, including a case before the Supreme Court of Canada regarding the jurisdiction of the Board of Commerce under the War Measures Act. Chief Electoral Officer In 1920, the House of Commons of Canada unanimously voted for Biggar as Canada's first Chief Electoral Officer following the enactment of the Dominion Elections Act. During his tenure, he increased the accuracy and completeness of the voter rolls, in particular by adding women, who had been allowed to vote in federal elections for the first time in 1921 but had often been prevented from voting by inaccurate voter rolls. Biggar also recommended to Parliament that advance polling be made more widely available, a suggestion that Parliament took up. League of Nations Biggar was a staunch supporter of the League of Nations and advocated for Canada's role in it. As a former advisor to Prime Minister Borden and a delegate to the 1919 Paris peace conference where the League was founded, Biggar often consulted government officials and politicians on matters of international law. He served as chairman of the Canadian Bar Association committee on international law and was also the chairman of the Canadian League of Nations Society executive committee. In 1924, Biggar was asked by Prime Minister William Lyon Mackenzie King to advise the Department of External Affairs on Canada's role in the League of Nations. This role was later taken over by Oscar D. Skelton. National Resources Acts From 1925 to 1926, Biggar was also involved as a negotiator in the drafting of the Natural Resources Acts, which transferred control over crown lands and natural resources from the federal government to the provincial governments. He was appointed by the Department of the Interior to represent the federal government's position in negotiations with Alberta. Biggar played a role in limiting provincial jurisdiction over aboriginal communities, arguing in favour of protection of