Overall I would say that most of you are overreacting to Mr. Hersh's article. While he does in fact take a very serious and apparently controversial stance on the career of KK, I don't think that it is as unwarranted as everyone posting here makes it seem.
Hersh, as he shows in his previous articles, was fully supportive of the running efforts of KK and wished to see him bring the spotlight to American distance running. Now, here is where you might say "Well he did do that! With all of those great times!" The fact of the matter is, that in the USA nothing you do outside of the Olympics matters all that much to the general public (Hersh's demographic).
An immigrant named Khalid Kannouchi winning a major marathon or setting a world record means just about zilch to most Americans and even running fans at that. However, if said Kannouchi had been able to dawn a USA uniform and do some damage at the Olympics, he would've been heralded as a great American who overcame adversity and was able to succeed. The American Dream if you will.
This is what separates KK from athletes like Bernard Lagat and Meb Keflezighi. Meb and Lagat both came to the US with the true desire that they believed that they could lead better lives in our country. Feeling indebted, they have both gone to great lengths to dawn USA jerseys as much as possible and have success in the red, white and blue. This is the main point of Phil's article.
I will admit now that I am young at a mere 21 years old and missed almost all of Kannouchi's running prime, but from my perspective I can commiserate with Hersh and say that I would rather a native born American or someone who at least truly showed American spirit to hold the American marathon record as opposed to it being held by a Moroccan who only once managed to dawn the the colors of the red white and blue.
If my definition of "American spirit" is not clear then continue to read. I am by no means claiming that I can not understand Kannouchi's situation and how he too overcame great adversity to become a US citizen. However, I am saying it is every great athlete's dream to compete in a world championships in the US. Be that the Super Bowl, the NBA finals or the Olympics, the goal of American's will always be to show the world on that specific day that we are really good at sports and that, Kannouchi did not do.