"but he straight out told me that the admission officers were impressed at the fact that I was an undocumented student, I had leadership positions, the grades, etc, and I was still applying to an Ivy. He said that most students who are in my situation don't usually apply to schools like that, and most are often afraid to even go to a community college."

It can be an advantage cause they don't see many undocumented students apply to ivy leagues with strong stats and credentials. Like I had said earlier, MOST undocumented student DO NOT apply to ivy leagues. Actually, most don't even attempt to go to college according to the Dartmouth admission officer. So if you take advantage of what you are offered and have great stats, then you are obviously overcoming adversity or a huge obstacle(your status), and that will give u major points for admissions into a top school. Is that a bit more specific for you?

I don't know how many colleges give complete fin. aid to MX or Canadian citizens. I know Cornell does. That's where I'm going cause of that. You can find those forms and guidelines for your application on their fin. aid website: finaid.cornell.edu
good luck.