USA can restrict import of medical devices and already makes it broadly illegal to import medical drugs. https://www.fda.gov/about-fda/fda-basics/it-legal-me-pe

USA can restrict import of medical devices and already makes it broadly illegal to import medical drugs. https://www.fda.gov/about-fda/fda-basics/it-legal-me-personally-import-drugs https://www.fda.gov/about-fda/fda-basics/it-legal-me-persona... (I'm not advocating for these restrictions.)