Perhaps you're thinking of Grutter v. Bollinger (2003) a case concerning affirmative action in admissions exercised by the University of Michigan Law School.
The Supreme Court decided that favoring underrepresented minority groups did not violate the 14th amendment equal protection clause. Writing for the majority, Sandra Day O'conor said "race-conscious admissions policies must be limited in time," and said that the Court believed that in 25 years that limit might be reached. Ruth Bader Ginsburg agreed with the ruling but not with having a time limit.
I'm not a lawyer so I don't know what I'm talking about, so I suggest seeing the Wikipedia page:
The Supreme Court decided that favoring underrepresented minority groups did not violate the 14th amendment equal protection clause. Writing for the majority, Sandra Day O'conor said "race-conscious admissions policies must be limited in time," and said that the Court believed that in 25 years that limit might be reached. Ruth Bader Ginsburg agreed with the ruling but not with having a time limit.
I'm not a lawyer so I don't know what I'm talking about, so I suggest seeing the Wikipedia page:
https://en.wikipedia.org/wiki/Grutter_v._Bollinger