Actually there are 3 trees,, or sets of races in this world , Mongoloids, Caucasians, and Negro.
When Hispanics, Latinos put down White on their forms they right.
Hispanics, Latinos are either mostly Spanish, or native South American, or North American Indian, or a mixture of both, so,in reality Latinos and Hispanics are white, or European.
I was working in a government personnel agency,hired in 1971. All Mexicans as well as Americans of European descent were considered Caucasian,Blacks were Negro and most people from the orient were Asian. There was also a fourth category and I can't recall what it was named but it contained a variety of islanders,including Eskimos and American Indians,I think they may have been the Mongoloids.
Recently,a former coworker and good friend and I had lunch and laughed about how when we were hired we were both white and now we were from different races.