The change in value and cultural stereotypes, which has taken the form of cultural wars, has affected almost all United States public spheres. In recent years, it has been increasingly affecting the field of basic scientific research, including the fundamental sciences such as physics and mathematics. Despite the leading positions of the United States in the world scientific ratings, immigrants have traditionally played a vital role in American fundamental science. Changes in immigration inflows, as a rule, contributed to socio-cultural shifts, which largely determined the subsequent level of fundamental research. The ongoing change in ideological guidelines, under the banner of "racial and ethnic diversity”, has already touched both the physical and mathematical communities. New “measures to improve diversity and inclusion” among faculty and students at American universities have been an important, but not the only manifestation of this trend. Such changes can have implications for the United States position in world science, as well as for its scientific, technological and economic development.