CU Boulder's Presidential Scholarship pays $15,000 a year for four years to incoming non-resident first-year students, and international applicants count as non-resident.
What is unusual is how it is decided. The university publishes no grade or test threshold and says test scores are not reviewed even if submitted. Academics are the focus of review, alongside personal background, and the admission application is the only application.
Be clear about the ceiling. The university states plainly that it has no full-ride award and no scholarship that lets a non-resident pay resident tuition, and a student cannot hold this and the Chancellor's Achievement Scholarship at once.