[princekolt]

(Disclosure: I'm not a US national, and I don't live in the US)

In my limited personal experience chatting with employees and hiring managers from a couple of big name US tech companies, what I've come to realize is that occasionally they hire talented foreigners simply because they're talented. Of course this doesn't apply to every foreign hire they do, but if they find someone that fits their culture and is above the average by a big margin, they'll be happy to create a job on the spot for that person. So while we try to think of the job market as fixed thing with N available places at any given moment, this certainly doesn't fully apply to creative/innovative workplaces.