I want to study BS CSE in USA with Financial Aids

I have secured 93% in Class 12 CBSE, got 7.5 IELTS Band and Now I want to apply for Undergrad in USA, I want to pursue BS CSE from some nice reputed college that provides aids and scholarships to International Students

Please guide me through the process to get admitted in Columbia, Caltech or UTA like colleges with Scholarship and financial aids