The US preferred to accept people leaving countries that were leftist or socialist, and to ignore dissidents from strategic allies. There were 38,000 Hungarians, displaced by Soviet invasion, in 1956; 240,000 Cubans between 1959 and 1962; 1,500 Ugandans in the early 1970s; nearly 80,000 Soviet Jews in the 1970s; and, in 1975, 130,000 Vietnamese and Cambodian refugees.
