You have apparently been on another planet for the last year.
Not only is it going to go here, it is inevitable that it is going to go everywhere.
Leftists gonna leftist. Every time. And this outcome is the precise destination of leftism, everywhere and always.
It's what Democrats do all the time. Bill Clinton was a master at this.
This proposed vaccine passport is simply to gauge the public and their reaction.
If there's enough pushback, the Dems will drop it and blame it on "right-wing" conspiracy theorists or white supremacists.
Down the road, they may implement it incrementally, like they did with Hillarycare or Gays in the military. But it's not going to be law all at once, immediately.