Colleges with merit scholarships may or may not restrict them to US citizens&residents.
UAlabama has a near full ride for students with a (weighted -* ) GPA and a perfect SAT or ACT score.
An international student posted here that he got a full ride from USouthern Mississippi.
Washington&Lee (if you don’t mind the name association) offers full rides too.
If you can afford 35-40k, lots more places open up: Knox College, Trinity TX, Miami-Ohio, Muhlenberg, Luther IA, App State, UMN Morris, Suny Albany, Truman State, St Kate’s, Augsburg, and Hamline in the Twin Cities as well as state universities. Dickinson, Denison, Bates become reachable reaches.
(* it means that grades in harder courses get extra points. For instance, an A in an AP/IB/Alevel class would be worth 5, a B 4 -whereas an easy class would be respectively 4 and 3.)