For California: https://leginfo.legislature.ca.gov/faces/codes_displayText.xhtml?lawCode=HSC&division=105.&title=&part=1.&chapter=2.&article= https://leginfo.le

For California: https://leginfo.legislature.ca.gov/faces/codes_displayText.xhtml?lawCode=HSC&division=105.&title=&part=1.&chapter=2.&article= https://leginfo.legislature.ca.gov/faces/codes_displayText.x... For the Federal Goverment: https://en.wikipedia.org/wiki/Public_Health_Service_Act https://en.wikipedia.org/wiki/Public_Health_Service_Act The list (for the federal government) of diseases is managed via Executive Order [PDF] https://www.govinfo.gov/content/pkg/FR-2003-04-09/pdf/03-8832.pdf https://www.govinfo.gov/content/pkg/FR-2003-04-09/pdf/03-883... The CDC also has a link to this: https://www.cdc.gov/quarantine/aboutlawsregulationsquarantineisolation.html https://www.cdc.gov/quarantine/aboutlawsregulationsquarantin... These measures have precedent, so good luck in getting these overturned.