Roger Raupp Rios is a Professor of Law at the Federal University or Rio Grande do Sul, in Brazil. While earning his PhD, his research focused on a systematical examination of Affirmative Action through a comparative study between the principle of equality in Brazilian Law and the equal protection doctrine developed in American Constitutional Law. As a law professor Mr. Rios has taught Constitutional Law and Human Rights Law since 1998. As an academic researcher, Rios has studied the United States Supreme Court's equal protection doctrine to elaborate his Masters thesis research on a comparative study between the principle of equality in Brazilian Law and the equal protection doctrine facing sexual orientation discrimination. While at Columbia University as a Visiting Scholar, Mr. Rios will be advised by Professor Alejandro Garro.