Since the 1870s, Cornell's system of fraternities and sororities grew to play a large role in student life, with many chapters becoming a part of national organizations. As of 1952, 19 fraternities had national restrictions based on race, religion or national origin, and of the 32 fraternities without such national requirements, 19 did not have "mixed" memberships. In response, the undergraduate Interfraternity Council passed a resolution condemning discrimination. In the 1960s, the Trustees established a Commission to examine the membership restrictions of those national organizations. Cornell adopted a policy that required fraternities and sororities affiliated with nationals that discriminated based on religion or race to either amend their national charters or quit the national organizations. As a result, a number of national Greek organizations dropped racial or religious barriers to their membership.