One of the most attractive aspects of US education is that majority of the students pursuing higher education in USA are successful in securing financial aids in the forms of research/graduate assistant ships, tuition fee waivers, fellowships etc.
There are several international organizations, such as the Fulbright Commission, who grant aid to students all over the world to Study in USA. Some of the organizations that offer aid are
The United Nations
AMIDEAST
World Council of Churches
Soros Foundation
World Health Organization