This is in the WHO Treaty, and perhaps where illegals will find jobs when Disease X is released.
The Compliance Committe may: Impose measures recommended by the WHO which, based on Covid-19 experience, may include ‘lockdowns,’ prevention of employment, disruption of family life and internal travel, & mandated masks and vaccination.
https://brownstone.org/articles/a-primer-on-the-who-the-treaty-and-its-plans-for-pandemic-preparedness/