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The United States and United Kingdom have different approaches to quarantine law that reflect each country’s unique historical context and constitutional structure. Under the Tudors, England vested quarantine authority in the monarch, with its subsequent exercise conducted by the military. As the constitutional structure changed, the manner in which quarantine was given effect subtly shifted, leading to constitutional reforms. Authorities transferred first to the Privy Council and, subsequently, to Parliament, where commercial interests successfully lobbied them out of existence. By the end of the 19th Century, quarantine authorities had been pushed down to the local port authorities. In the United States, in contrast, the opposite trajectory took place: what began as an local port authority gradually evolved into state measures, which continued to emphasize the intensely local nature of the rules governing cordon sanitaire and maritime quarantine. Direct federal attack via the Commerce Clause, however, was avoided via the Spending Clause. Current arguments place the U.S. response to both pandemic disease and biological weapons within an Article II realm, giving rise to significant concerns about shifting constitutional norms.

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4 Nat'l Security & Armed Conflict L. Rev. 82-206 (2014)