Using eighteen years of data from more than 1,300 four-year colleges and universities in the United States, we investigate the extent to which institutional characteristics and contextual factors influence the propensity of colleges to indicate that they consider race/ethnicity in their admissions decisions. Consideration of race/ethnicity in admissions declined sharply after the mid-1990s, especially at public institutions. Rather than being shaped by specific historical and political contexts, consideration of race/ethnicity in admissions appears to be a widely institutionalized practice in higher education that has been tempered by changes in the policy environment over time.