[chetanahuja]

Note that the products/services made by these immigrants are sold globally, not just in the US. Google, for example, acquires more than 50% of it's revenues from outside the US.

If you don't object to google's selling it's services across the world on free-market principles, it'll take a rather large leap of (il)logic to constrain the employment to be restricted to the physical location of the HQ of this global company.

[rayiner]

Movement of residents is fundamentally different than movement of goods. Moreover, nothing constrains Google from hiring people in locations outside the US to service those markets.