Section 33 of the Canadian Charter of Rights and Freedoms, known as the notwithstanding clause, is part of the Constitution of Canada. Also known as the override clause, Section 33 allows federal, provincial or territorial governments to temporarily override, or bypass, certain Charter rights. Section 33 overrides can last only five years, when they are subject to renewal. Although the clause is available to governments, its use is politically difficult and therefore rare. It is known colloquially as the “nuclear option,” because its use is considered extremely severe. Since the Constitution was patriated in 1982, the clause has been used only a handful of times by various provinces. The federal government has never invoked the notwithstanding clause.