[gruez]

They already:

* have access to your internet usage, search history, and phone records

* track our location through cellphones

* have surveillance cameras everywhere, in case you didn't bring your phone

* track where your cars is through a vast network of ANPRs

* fly drones/planes over cities doing aerial surveillance

And you think that tracking the number of H1B visa holders is too much?

[rtkwe]

The roadblock as always is bringing all that info together. Few places have access to all that information and a way to synthesize it together.