He led a group of Independent MPs in the House of Commons of Canada who were opposed to the implementation of conscription during World War II.
Dorion studied at Laval University but left in order to enlist in the Royal Flying Corps during World War I.
[2] Dorion, in turn, accused William Lyon Mackenzie King's Liberals of being in a "secret union" with the communist Labor-Progressive Party.
[5] After a failed attempt to launch a new political party led by Arthur Cardin, King's former Public Works minister who crossed the floor in 1942 to oppose the government's conscription policy, Dorion was re-elected as an independent in 1945.
Dorion represented the Count in his court proceedings and also told the House of Commons, "I am sure that if it had been Communist Jews who had come here instead of French Catholics we would not have heard a word about them.