May - Asian Pacific American Heritage Month.

In June 1977, Representatives Frank Horton of New York and Norman Y. Mineta of California introduced a House resolution that called upon the president to proclaim the first ten days of May as Asian/Pacific Heritage Week. In May 1990, the holiday was expanded further when President George H. W. Bush designated May to be Asian Pacific American Heritage Month. May was chosen to commemorate the immigration of the first Japanese immigrants to the United States in 1843.

http://www.apaha.org

Some of the largest groups in in USA are: Vietnamese, Chinese, Filipinos, Indian, Pakistani, Korean, Japanese, Cambodian, Laotian, Indonesian, Thai, Burmese, Malaysian, Taiwanese, Sri Lanka, Bangladeshi, and a variety of Pacific Islanders from the Hawaiian Islands, Polynesian Islands, and New Zealand.
Vietnam: image resources
map of Vietnam	Waving Flag Of Vietnam	Ladies with Straw Hats	Asian Women Setting Up Street Sales Venue
China: image resources Images of Chinese Culture Great Wall Of China  |   Scenery of a city in Southern China   |   Beijing and Shanghai Landscape of China   |   China Scenery  |   Impression of China
China globe illustration	Chinese Flag	Forbidden City	The Great Wall of China
Philippines: image resources
map of Philippines	Tropical beach with rainbow	Boy holding sea turtle	Filipino village church
India - image resources
Map of India and Indian flag	Glimpse India	Riding camels in the dunes, Jaisalmer desert, India	Ganges River, Varanasi, India
Pakistan - image resources
Map of Pakistan and Pakistani flag	Mountain	Shepherd	Muharram Festival
Korea - image resources
North Korean Flag	South Korean Flag	Seoul Olympic Park	Gyeongbokgung Palace
Japan - image resources
map of Japan and Japan flag text	modern architecture	Japanese Castle during Cherry Blossom	Itsukushima Torii Shrine
Cambodia - image resources
map of Cambodia	Cambodian Children in Praise	Group of small khmer Children and baby	Thai Khmer Girl in Traditional Dress Isolated
Laos - image resources
map of Laos	Laos Flag with Clouds	Wat Xieng Thong	River Scene, Southern Laos
Indonesia - image resources
map of Indonesia	Children in a traditional village during a Toraja ceremony, Rantepao, Sulawesi island, Indonesia	thatched roof in south flores, indonesia	Bromo
Thailand - image resources
Thailand Flag Closeup	Akka Tribe, Northern Thailand	Aquatic Wonder - Thailand	Grand Palace - Thailand
Burma, officially the Union of Myanmar - image resources
map of Myanmar	Two women praying buddha, Myanmar	Shwedagong pagoda	Table of buddhist young monk eating, Myanmar
Malaysia -- image resources
Malaysian Flag Closeup	Tea Plantation	Paradise Beach	twin towers
Taiwan - image resources
Taiwan globe	20000 people swim 3300 meter across Sun Mon Lake, Taiwan	Eastern Coast of Taiwan	Natural Science Museum
Bangladesh - image resources
map of Bangladesh	Dhaka on Bangladesh map	Bangladeshi Flag Closeup	Dhaka text with flag
Sri Lanka - image resources
Stamp Sri Lanka	Fishing in Sri Lanka	Schoolboys having fun	Tealady
Hawaiian Islands - image resources
Map of Hawaii	The Hawaiian Coast	Hanauma Bay, Oahu, Hawaii	Hawaii Kona Beach
New Zealand - image resources
Auckland skyline against New Zealand flag	New Zealand Vineyard	Dawn at Moeraki, New Zealand	Ferry Terminal and old Ferry Building in Auckla