Should the federal government override provincial laws to allow the free flow of goods, like alcohol, across internal borders?

Section 121 of the Constitution Act, 1867, mandates that all articles of the growth, produce, or manufacture of any one of the provinces shall be admitted free into each of the other provinces, yet internal trade barriers effectively cost the Canadian economy roughly $80 billion annually. The issue famously reached the Supreme Court in the R v. Comeau case when a New Brunswick man was fined for driving beer home from Quebec, highlighting the persistent protectionist policies, particularly in alcohol and agriculture, that differ from province to province. Proponents argue that a true single…   market would lower prices for consumers, increase productivity, and fulfill the original promise of Confederation. Opponents argue that provincial sovereignty allows local governments to protect specific cultural industries, manage public health risks like alcohol distribution, and maintain control over their own economic destiny.