This document summarizes several Supreme Court cases related to affirmative action from the 1970s to the present. It discusses key cases such as Regents of the University of California v. Bakke (1978) which allowed race to be a factor in admissions but not the sole determining factor, Johnson v. Transportation Agency (1987) which allowed gender to be one factor among many in a promotion decision, and Grutter v. Bollinger (2003) which upheld the use of race in admissions to obtain a diverse student body at the University of Michigan Law School. The document analyzes how these and other cases have shaped affirmative action policies and interpretations of the Equal Protection Clause.