>what grounds the passport can be mandated?
A suspended Constitution, and rule by 'emergency order', backed by so-called 'health experts' like Fauci and Walensky
Maryland and Virginia School Vaccine Mandates Or Weekly Testing For Staff:
https://www.msn.com/en-us/news/us/howard-county-schools-mandate-vaccines-for-staff/ar-AANguOD?ocid=uxbndlbing
https://www.mymcmedia.org/mcps-staff-must-provide-vaccination-proof-or-participate-in-weekly-testing/
https://www.wric.com/news/virginia-teachers-union-backs-vaccine-or-testing-requirement-new-law-changes-process-for-student-mandate/