In 1919, Albizu returned to his studies at Harvard University, where he was elected president of the Harvard Cosmopolitan Club. He met with foreign students and world leaders, such as Subhas Chandra Bose, the Indian Nationalist leader, and the Hindu poet Rabindranath Tagore. He became interested in the cause of Indian independence and also helped to establish several centers in Boston for Irish independence. Through this work, Albizu Campos met the Irish leader Éamon de Valera and later became a consultant in the drafting of the constitution of the Irish Free State. Also while at Harvard University he co-founded the university's Knights of Columbus chapter along with other Catholic students.