My point is that Chambers sees a benefit to his company for doing this, and there are other U.S. Cisco stakeholders besides employess/potential employees. I don't think that it is an issue of being loyal to the US. Now, if you want to see where it is an issue, ask a journalist if they are US citizen or journalist first. :)
It is a short term view, wantying to get an increase in profit in the most rapid manner possible. The sad thing is though, in the long term, it rots the viability of US based companies to compete because eventually, foreign workers leave to start up their own firms, with the profits not going to US based shareholders, but foreign shareholers.