USA is probably:
White 68% Hispanic 15% Black 13% East Asian 3% Jewish 2% Amerindian 1%
White includes Jewish (2%) and Arab (1%). Quite possibly some of those labeled Hispanic are also White, but the numbers are not known. I would say that any Hispanic that is 75-85% White should be seen as White. Amerindian includes US Amerindians, not those from the rest of the Americas.
The Black, Amerindian and Jewish populations are static into the long-term. Hispanic is increasing rapidly and Asian is probably also increasing. Whites are on a slow decrease of ~.5%/year. There is a large mixed population not included here that have somehow been lumped into one or another race. This includes mulattos, Amerasians (Hapas), and White Hispanic. Only 20% of the Amerindian group is pure Amerindian, if that. Most are significantly mixed with White. It is not known where South Asians figure in.