The Association of American Universities (AAU) is an organization of predominantly American research universities devoted to maintaining a strong system of academic research and education. Founded in 1900, it consists of 69 public and private universities in the United States as well as two universities in Canada. AAU membership is by invitation only and requires an affirmative vote of three-quarters of current members. Organization.
https://en.wikipedia.org/wiki/Association_of_American_Universities