Asian and Pacific Islander includes "all people of Asian, Asian American or Pacific Islander ancestry who trace their origins to the countries, states, jurisdictions and/or the diasporic communities of these geographic regions."
"In 1978, a joint congressional resolution established Asian/Pacific American Heritage Week. The first 10 days of May were chosen to coincide with two important milestones in Asian/Pacific American history: the arrival in the United States of the first Japanese immigrants (May 7, 1843) and contributions of Chinese workers to the building of the transcontinental railroad, completed May 10, 1869."