American Credit Cards for Canadian students?

Hi! I'm a resident of New York state but am going to university in Canada. I plan to come back to the states for graduate school and went to canada because it was the least expensive of my education options. But because I want to establish credit in America, I'd like to get an American credit card. The problem is that I do not work and am a student but on all of the student credit card applications, they ask for a school in the united states. Mine however, is in canada. I have also tried applying for regular credit cards (not for students) but have been rejected because I do not have any credit history. Does any one know of a credit card company that would be willing to give me a credit card? Please help. I'd like to get this taken care of before going back to school in the fall. Thanks.