Nationality aside, you make some good points. I just disagree with you bringing up the language thing.
it's So nationalization should never, ever, count in considering someone’s “qualification”? Ergo, if technical qualification is equal, nationalization can never, under any circumstance, make a difference, you must simply flip a coin?
You have to answer this, either being a natural born US citizen can matter, or, as n3wbi3 says, it can't be considered, ever. Is that what you believe? You obviously won't be alone if you do, but until you do claim this as what you actually believe I doubt that you do.