1- You might want to examine the ethnic demographics of Columbia, half are foreign and most of the rest are US minorities. Few average Americans (the ones that enlist) are not ever given admission.
2- Most graduates from Columbia will never serve except on Wall St.
3- Their perceived job is making money not defending the USA.
4- A disproportionate number of bankers who robbed taxpayers blind probably came from Ivy League and Columbia and Harvard.
5- An equally disproportionate number from Columbia have never ever served in any capacity in our military. Their self proclaimed mission is about stealing our taxes using Geithner and the Fed.
I'm told that some of the earliest Viet Nam war era riot/protests occurred at Columbia.