My father lives in Germany. He just found out that he now officially works out of Chicago (no, not Chicago, Germany). Mind you, the company didn't actually tell him this. They just sent out a company-wide email announcing a new manager and the list of employees, including my father, reporting to him.
I doubt he'll have to move to the US. In fact, he'd probably flat out refuse since he doesn't want to live here again, but it will be interesting to see what comes of this.