Do you have DACA? If so, make sure it is renewed through the dates that you are able to do that.
Does the public college and university system in Nebraska admit students like you, and if so what kind of aid do they offer?
Keep working on your ACT test prep, and keep up your grades. Some private colleges and universities do have merit-based and/or need-based aid for you, and your status won’t matter. You also should consider applying for Questbridge: https://www.questbridge.org/
There are a small number of public universities that guarantee near full-rides for excellent grades and test scores even for international applicants. Start here to look for them: http://talk.collegeconfidential.com/financial-aid-scholarships/2006094-2017-automatic-full-tuition-full-ride-scholarships-p1.html
Wishing you all the best.