What little aid is available usually comes from the college itself. There is very little financial aid from the US for international students to study in the US (just as there is very little financial aid from foreign countries for US students to study internationally). See www.edupass.org for information about studying in the US, including financial aid.

Private student loans uniformly require a US citizen or permanent resident creditworthy cosigner.

Two sites that I know of provide loans to international students with a US cosigner:

www.privatestudentloans.com/international and
www.internationalstudentloans.com

For scholarships, visit iefa.org or InternationalScholarships.com

Good Luck!