Meanwhile , only the White population of the United States was enumerated by their country of birth in 1940 and 1950 .
The whole U.S. population was enumerated by country of birth between 1850 and 1930 and again from 1960 to the present day .
Only the White population of the U.S.   was enumerated by their country of birth in 1940 and 1950 .
The whole U.S. population was enumerated by country of birth between 1850 and 1930 and again from 1960 to the present day .