The comments from CNBC's readers about the article I mentioned this morning (CNBC's Darren Rovell: NYC marathon winner not a real American since he's originally from Africa) have been uniformly outraged. This one was the best.My best friend was from Eritrea and he became American citizen about 9 years ago. I remember how proud he was. He was so proud He became US Air Force and he got killed in Iraq two years later. I know my friend die as am American. And I know he was so proud to be an...