Final answer:
To curb mass emigration from Quebec, the US passed the Emergency Quota Law of 1921, and later considered the Comprehensive Immigration Reform Act in 2006. Within Canada, Quebec faced its own issues regarding sovereignty, impacting its cultural and demographic character.
Step-by-step explanation:
To counter mass emigration from Quebec to the USA, various measures were implemented over time. Concerns about immigration and its effects on the job market led to the Emergency Quota Law of 1921 in the US, which sought to temporarily restrict immigration numbers. Despite these restrictions, mass migration continued for various reasons, including the search for better living conditions and the attraction of skilled labor. The fear of an imbalance in language, culture, and legal status of immigrants also prompted the Comprehensive Immigration Reform Act proposal in 2006, although it failed to become law. Within Canada, Quebec's discourse on sovereignty and possible separation from Canada occurred amidst these complex immigration narratives, but ultimately, the Supreme Court ruled that Quebec could not unilaterally secede. The Quebec Act played a role in shaping the province's character by extending its boundaries and granting religious tolerance, which carried broader implications for migration and cultural assimilation.