Chicago has a large Polish community, so you might look at opportunities there. And, of course, California is a total melting pot where you will meet people from everywhere in the world, and has the benefit of seriously brainiac schools (maths and engineering) like Stanford, USC, CalPoly, UC Berkeley, etc. Might be good schools there.
Stanford is listed along similar stipulations that AU. Berkeley is free of any additional 'footnotes with footnotes'. Truth be told I've had an eye for it as I recall their history as "major CalTech competitor since Feynman", which is awesome in my book ;). Side-note… I think I'll literally go to some sort of lawyer so that he/she could translate this legal gibberish for me. It's frigging mind-boggling that I can read this (and the only edition I could get from library is in English) fairly comfortably, but need a dictionary, Google and a stumped father next to me to read a legal note in my native language and fail consistently. :/