1 The U.S. Census Bureau definition of Asians refers to a person having origins in any of the original peoples of the Far East, Southeast Asia, or the Indian subcontinent. 
2 The United States Government classified Kalmyks as Asian until 1951, when Kalmyk Americans were reclassified as White Americans.
3 The US Census Bureau reclassifies anyone identifying as "Tibetan American" as "Chinese American".
4 Bengali Americans may be classified as Bangladeshi or Indian. Punjabi Americans may be classified as Indian or Pakistani. Tamil Americans may be classified as Indian or Sri Lankan.
The US Census Bureau considers Afghanistan
a South Asian country, but does not classify Afghan Americans