If this falls, then affirmative action should be next.
O'Connor already took a stab at the expiration date for the constitutionality of that form of unconstitutional discrimination. She said it is constitutional for another 25 years or so from the Grutter v. Bollinger, 539 U.S. 306 (2003) decision.
It has been 25 years since Justice Powell first approved the use of race to further an interest in student body diversity in the context of public higher education. Since that time, the number of minority applicants with high grades and test scores has indeed increased. See Tr. of Oral Arg. 43. We expect that 25 years from now, the use of racial preferences will no longer be necessary to further the interest approved today.