A good-government group is threatening to sue Oregon Gov. Kate Brown if she moves forward with her planned implementation of a vaccine verification system—commonly called a vaccine passport system—for residents of the state to enter a business without wearing a face mask. A vaccine passport is proof that an individual has tested negative for or been inoculated against certain infections, such as the CCP virus that causes the disease COVID-19. The passport can be digital, such as a smartphone app, or physical, such as a small paper card. Government officials and businesses can demand to see it before allowing an individual to go into an office; board an airplane; or visit a restaurant, movie theater, or health club. The policy to create a framework for enforcing vaccine passports was outlined by the Oregon Health Authority on May 18 in a document titled “Interim Guidance for Fully Vaccinated Individuals,” which states, among other …