This paper briefly reviews major theoretical and clinical changes in American psychoanalysis since its beginning in the early twentieth century. The immigration of European analysts in the 1930s and 40s was of major significance. Infant development research promoted a shift towards the importance of object relations, reducing the importance of the Oedipus complex. The increasing focus on narcissism and borderline personalities is discussed, as well as the applications to dynamic psychotherapy. Dogma dissipated with increasing latitude in theory and clinical work within “classical” psychoanalysis.