The Chinese Immigration Act, 1923 was repealed on May 14, 1947, ending the period of Chinese exclusion in Canada. Several factors led to its repeal, including China's status as a wartime ally, the significant wartime contributions of Chinese Canadians, the repeal of similar American immigration legislation, and changing attitudes about human rights. Canada's policy of Chinese exclusion contradicted Canada's growing support for international human rights causes. After the Exclusion Period ended in 1947, Chinese immigration was governed by a pre–existing Order in Council that regulated Asian immigration.