[142] On June 6, 1924, Coolidge delivered a commencement address at historically black, non-segregated Howard University, in which he thanked and commended African Americans for their rapid advances in education and their contributions to U.S. society over the years, as well as their eagerness to render their services as soldiers in the World War, all while being faced with discrimination and prejudices at home.[143]
In a speech in October 1924, Coolidge stressed tolerance of differences as an American value and thanked immigrants for their contributions to U.S. society, saying that they have "contributed much to making our country what it is."He stated that although the diversity of peoples was a detrimental source of conflict and tension in Europe, it was peculiar for the United States that it was a "harmonious" benefit for the country. Coolidge further stated the United States should assist and help immigrants who come to the country and urged immigrants to reject "race hatreds" and "prejudices".[144][page needed]

Foreign policy
Official portrait of Calvin Coolidge
Coolidge was neither well versed nor very interested in world affairs.[145] His focus was directed mainly at American business, especially pertaining to trade, and "Maintaining the Status Quo". 