Dude, have you ever met anyone from one of these Universities (like EE/CS graduate programs), or been there? If you are asking for numbers, I have to just laugh at your ignorance.
All right. It is never too late to learn. Here is a link to the Student webpages of the Electrical Engr. Dept. at one of the Universities you noted, Stanford. Check and see how many of these are American names. I would bet less than 25%. It will be a real eye opener for you.
Electrical Engineering Student Webpages