The Marin County Board of Supervisors voted 4-1 on Tuesday to send a letter of support for California Senate Bill 277, which, if passed in the fall, would eliminate personal belief exemptions for school-mandated vaccinations. The lone voice of opposition came from Supervisor Steve Kinsey, who worried—along with many other speakers at Tuesday’s board meeting—that the bill could strip Marin residents of their right to free choice.
“I support the value of vaccinations,” said Mr.…