What was the name of the first law passed by the Canadian government after the Statute of Westminster?

The first law passed by the Canadian government after the Statute of Westminster in 1931 was the Canadian Citizenship Act, which came into effect on January 1, 1947. This act established Canadian citizenship as a distinct legal status separate from British subject status, allowing Canadians to identify as citizens of Canada. Prior to this, Canadians were considered British subjects, and the act marked a significant step in the evolution of Canadian national identity.