American colleges generally consider at least your GPA, in addition to test scores, in awarding merit scholarships. You’d need to identify schools where you satisfy both of those (and any other) criteria.
Consider this list:
http://automaticfulltuition.yolasite.com/
Search CC for variations/updates to that list, for example:
http://talk.collegeconfidential.com/financial-aid-scholarships/2006094-2017-automatic-full-tuition-full-ride-scholarships-p5.html
http://talk.collegeconfidential.com/financial-aid-scholarships/1910341-merit-scholarships-for-33-act-and-top-10-percent-class-rank-p1.html
If any of these colleges interest you, be sure to verify that the scholarships are open to international students. If you’re seeking admission for Fall 2018, note that some deadlines have passed.