This legal principle, established in a landmark Supreme Court of Canada decision, concerns the constitutional division of powers related to interprovincial trade. The case centered on a New Brunswick resident who purchased alcohol in Quebec and transported it back to his home province, exceeding the personal import limit set by New Brunswick law. This act led to charges, and the subsequent legal challenge questioned whether provincial limitations on cross-border trade infringed upon federal authority over trade and commerce.
The ruling significantly impacted the interpretation of Section 121 of the Constitution Act, 1867, clarifying its scope and influence on provincial regulatory power. The decision holds implications for businesses engaged in interprovincial commerce, affecting their ability to operate freely across provincial boundaries. It underscores the tension between provincial autonomy and the need for a unified national economic space, impacting areas ranging from alcohol sales to agricultural products and the movement of goods and services. The decision’s legacy continues to shape legislative and regulatory frameworks governing trade within Canada.