The white population of the US is not 90% though, if we include all hispanics, it's 75%, without it's about 65%, and decreasing.
No. I overestimated by counting all hispanics but only 66% of them identify as white: so it is 85%.
http://en.wikipedia.org/wiki/Demographics_of_the_United_States#Race_and_ethnicity
http://factfinder.census.gov/servle...eo_types=N&-geo_id=01000US&-format=&-_lang=en