Souverainism

Souverainism (from the French word "souverainisme", i.e. the ideology of sovereignty) or sovereigntism is a doctrine which supports acquiring or preserving political independence of a nation, state, or a region. It can also be present in federal states, confederations, and supranational (fœderal) unions, in which the the preservation of the sovereignty of the member States or the Union (either the collective sovereignty of the member States or the Federal Head) itself against the other or against international law or organizations is the goal.

Canada
In Canada, "souverainism" is the idea that the sovereignty of the United Commonwealths of Canada and the Commonwealths severally should be preserved, protected, and defended from encroachments and usurpations of Canadian sovereignty (Federal and Commonwealth) by international organizations and expansions of international law into areas of domestic concern or otherwise touching upon the competence of the Federal and/or Commonwealth governments.

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United States
In the United States, "souverainism" is the idea that the sovereignty of the United States and the States severally should be preserved, protected, and defended from encroachments and usurpations of United States sovereignty (Federal and State) by international organizations and expansions of international law into areas of domestic concern or otherwise touching upon the competence of the Union and/or States.

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