National Resources Mobilization Act is a Canadian government statute

Statute

A statute is a formal written enactment of a legislative authority that governs a state, city, or county. Typically, statutes command or prohibit something, or declare policy. The word is often used to distinguish law made by legislative bodies from case law, decided by courts, and regulations...

 which enabled conscription

Conscription

Conscription is the compulsory enlistment of people in some sort of national service, most often military service. Conscription dates back to antiquity and continues in some countries to the present day under various names...

 in Canada

Canada

Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...

 during World War II

World War II

World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

. The bill, passed by Parliament on June 21, 1940, permitted conscripts to be used for home defence only and not to be deployed overseas but was modified lolin August 1942 to permit the government to send conscripts overseas via an order in council after a plebiscite in April 1942.

In 1944, the government passed an order in council sending some conscripts overseas. This precipitated the Conscription Crisis of 1944

Conscription Crisis of 1944

The Conscription Crisis of 1944 was a political and military crisis following the introduction of forced military service in Canada during World War II. It was similar to the Conscription Crisis of 1917, but was not as politically damaging....

 and resulted in several Quebec Liberal

Liberal Party of Canada

The Liberal Party of Canada , colloquially known as the Grits, is the oldest federally registered party in Canada. In the conventional political spectrum, the party sits between the centre and the centre-left. Historically the Liberal Party has positioned itself to the left of the Conservative...

MPs leaving the party in protest.