 
Asian immigration to the United States refers to immigration to the United States from part of the continent of Asia, which includes East Asia, South Asia, and Southeast Asia. Asian-origin populations have historically been in the territory that would eventually become the United States since the 16th century. The first major wave of Asian immigration occurred in the late 19th century, primarily in Hawaii and the West Coast. Asian Americans experienced exclusion, and limitations to immigration, by the United States law between 1875 and 1965, and were largely prohibited from naturalization until the 1940s. Since the elimination of Asian exclusion laws and the reform of the immigration system in the Immigration and Nationality Act of 1965, there has been a large increase in the number of immigrants to the United States from Asia.
History.
Early immigration (before 1830s).
The first Asian-origin people known to arrive in North America after the beginning of the European colonization were a group of Filipinos known as "Luzonians" or Luzon Indians. These Luzonians were part of the crew and landing party of the Spanish galleon "Nuestra Señora de Buena Esperanza". The ship set sail from Manila and landed in Morro Bay in what is now the California Coast on 17 October 1587 as part of the Galleon Trade between the Spanish East Indies (the colonial name for what would become the Philippines) and New Spain (Spain's colonies in North America). More Filipino sailors arrived along the California Coast when both places were part of the Spanish Empire. By 1763, "Manila men" or "Tagalas" had established a settlement called St. Malo on the outskirts of New Orleans, Louisiana. Indians have been documented in Colonial America as early as 1775. With the establishment of the Old China Trade in the late 18th century, a handful of Chinese merchants were recorded as residing in the United States by 1815.
First major wave of Asian immigration (1850–1917).
By the 1830s, East Asian and Southeast Asian groups had begun immigrating to Hawaii, where American capitalists and missionaries had established plantations and settlements. Originating primarily from China, Japan, Korea, and the Philippines, these early migrants were predominantly contract workers who labored on plantations. With the annexation of Hawaii by the United States in 1893, a large population of Asians lived in U.S. territory and more would continue to immigrate. As American capitalists established sugar cane plantations in Hawaii in the 19th century, they turned, through organizations such as the Royal Hawaiian Agricultural Society, to the Chinese as a source of cheap labor as early as the 1830s, with the first formal contract laborers arriving in 1852. Resistance from plantation laborers protesting low wages and tensions between various native and immigrant groups encouraged plantation owners to import more labor from different Asian countries to keep wages low. Between 1885 and 1924, "some 30,000 Japanese had gone to [Hawaii] as "kan'yaku imin", or government-sponsored contract laborers." Between 1894 and 1924, roughly 170,000 Japanese immigrants went to Hawaii as private contract laborers, family members of existing immigrants, and merchants. Taking refuge from Japanese imperialism and growing poverty and famine in Korea, and encouraged by Christian missionaries, thousands of Koreans migrated to Hawaii in the early 1900s. Filipinos, who were American colonial subjects after 1898, migrated by the "tens of thousands" to Hawaii in the early 1900s.
The first major wave of Asian immigration to the continental United States occurred primarily on the West Coast during the California Gold Rush, starting in the 1850s. Whereas, Chinese immigrants numbered less than 400 in 1848 and 25,000 by 1852. Most Chinese immigrants in California, which they called "Gam Saan" ("Gold Mountain"), were also from the Guangdong province; they sought sanctuary from conflicts such as the Opium Wars and ensuing economic instability, and hoped to earn wealth to send back to their families. As in Hawaii, many capitalists in California and elsewhere (including as far as North Adams, Massachusetts) sought Asian immigrants to fill an increasing demand for labor in gold mines, factories, and on the Transcontinental Railroad. Some plantation owners in the South sought Chinese labor as a cheap means to replace the free labor of slavery. Chinese laborers generally arrived in California with the help of brokers in Hong Kong and other ports under the credit-ticket system, where they would pay back money loaned from brokers with their wages upon arrival. In addition to laborers, merchants also migrated from China, opening businesses and stores, including those that would form the beginnings of China towns.
Japanese, Korean, and South Asian immigrants also arrived in the continental United States starting from the late 1800s and onwards to fill demands for labor. Japanese immigrants were primarily farmers facing economic upheaval during the Meiji Restoration; they began to migrate in large numbers to the continental United States (having already been migrating to Hawaii since 1885) in the 1890s, after the Chinese exclusion (see below). By 1924, 180,000 Japanese immigrants had gone to the mainland. Filipino migration to North America continued in this period with reports of "Manila men" in early gold camps in Mariposa County, California in the late 1840s. The 1880 census counted 105,465 Chinese and 145 Japanese, indicating that Asian immigration to the continent by this point consisted primarily of Chinese immigrants, overwhelmingly present in California.
In the 1860s and 1870s, nativist hostility to the presence of Asian laborers in the continental United States grew and intensified, with the formation of organizations such as the Asiatic Exclusion League. East Asian immigrants, particularly Chinese Americans who composed the majority of the population on the mainland, were seen as the "yellow peril" and suffered violence and discrimination. Lynchings of Chinese were common and a large-scale of attacks also occurred. The most prominent act of violence at the time was the Rock Springs massacre, in which a mob of white miners killed nearly 30 Chinese immigrants because they were accused of taking the white miners' jobs. In 1875, Congress passed the Page Act, the first restrictive immigration law. This law recognized forced laborers from Asia as well as Asian women who would potentially engage in prostitution as "undesirable" people, who would henceforth be barred from entering the United States. In practice, the law was enforced to institute a near-complete exclusion of Chinese women from the United States, preventing male laborers from bringing their families with or after them.
The Chinese Exclusion Act of 1882 prohibited virtually all immigration from China, the first immigration law to do so on the basis of race or national origin. Minor exceptions were made for select merchants, diplomats, and students. The law also prevented Chinese immigrants from naturalizing as U.S. citizens. The Geary Act of 1892 further "required Chinese to register and secure a certificate as proof of their right to be in the United States" if they sought to leave and reenter the United States, with imprisonment or deportation as potential penalties. Although racial discrimination intensified in the exclusion era, Chinese immigrants fought to defend their existing rights and continued to pursue voting rights and citizenship. The children of Chinese immigrants began to develop "a sense of themselves as having a distinct identity as Chinese Americans." In 1898, in the case "United States v. Wong Kim Ark", a Chinese American, who had been born in San Francisco, was initially denied re-entry in the United States was found to be a U.S. citizen; this decision established an important precedent in its interpretation of the Citizenship Clause of the Fourteenth Amendment to the Constitution.
Initially, Japanese and South Asian laborers filled the demand that could not be met by new Chinese immigrants. The 1900 census counted 24,326 Japanese residents, a sharp increase, and 89,863 Chinese residents. The first South Asian immigrants landed in the United States in 1907, and were predominantly Punjabi Sikh farmers. As immigration restrictions specific to South Asians would begin two years later and against Asians generally eight years after that, "[a]ltogether only sixty-four hundred came to America" during this period. Like the Chinese and Japanese immigrants of the time, these South Asians were predominantly men. South Asian migrants also arrived on the East Coast, although to a lesser extent in the late 19th and early 20th centuries, predominantly Bengali Muslims who worked as craftsmen and merchants, selling 'exotic' goods such as embroidered silks and rugs. The 1910 census, the first to count South Asians, recorded that there were 2,545 "Hindus" in the United States.
Anti-Asian hostility against these both older and newer Asian immigrant groups continued, becoming explosive in events such as the Pacific Coast race riots of 1907 in San Francisco, California; Bellingham, Washington; and Vancouver, British Columbia, Canada. The San Francisco riot was led by anti-Japanese activist, rebelling with violence in order to receive segregated schools for Caucasian and Japanese students. In the Bellingham riots, a mob of 400-500 white men attacked the homes of hundreds of South Asian immigrants, beating them and driving them out of town, with over 400 South Asians held in "protective custody" by local authorities. Along with geopolitical factors, these events encourage the United States to pursue the 1907 Gentleman's Agreement with Japan, wherein the Japanese government agreed to prohibit emigration to the United States and the latter's government agreed to impose less restrictions on Japanese immigrants. In practice, this meant that Japanese immigrants were barred unless they had previously acquired property or were immediate relatives of existing immigrants. While overall Japanese immigration was sharply curtailed, the family reunification provision allowed for the gender gap among Japanese Americans to be reduced significantly (including through "picture brides"). As Koreans were Japanese colonial subjects at the time and could be issued Japanese passports, many Korean women also immigrated as family members and "picture brides".
After the Spanish–American War ended with the Treaty of Paris in 1898, the United States replaced Spain as the colonial ruler of the Philippines. As Filipinos become colonial subjects of the United States, they also became US nationals. As American colonial subjects, Filipinos were considered US nationals and thus were not initially subject to exclusion laws. Many Filipinos came as agricultural laborers to fill demands once answered by Chinese and Japanese immigration, with migration patterns to Hawaii extending to the mainland starting from the 1920s. The US government also initially sponsored select Filipino students, known as "pensionados", to attend US colleges and universities. However, in 1934, the Tydings–McDuffie Act, which promised independence to the Philippines by 1945, also sharply curtailed Filipino immigration with a quota of 50 immigrants per year.
Exclusion era.
The prohibitions of Chinese and Japanese immigration were consolidated and the exclusion was expanded to Asia as a whole in the Asiatic Barred Zone Act of 1917, which prohibited all immigration from a zone that encompassed parts of the Middle East, Central Asia, South Asia (then-British India), and Southeast Asia. The Immigration Act of 1924 introduced national origin quotas for the entire Eastern Hemisphere, and barred the immigration of "aliens ineligible for citizenship." This introduced a period of near complete exclusion of Asian immigration to the United States. The act also formed the United States Border Patrol to take over duties of the United States Bureau of Immigration (Chinese Division). There were some key exceptions to this broad exclusion: in addition to continuing Filipino immigration due to their status as US nationals until 1934, Asian immigrants continued to immigrate to Hawaii, which was a US territory and therefore not subject to the same immigration laws until it achieved statehood in 1959. Many Chinese had also immigrated to Puerto Rico after 1882, which would become a US territory in 1898 and remains one today.
After exclusion, existing Chinese immigrants were further excluded from agricultural labor by racial hostility, and as jobs in railroad construction declined, they increasingly moved into self-employment as laundry workers, store and restaurant owners, traders, merchants, and wage laborers; and they congregated in Chinatowns established in California and across the country.
Of the various Asian immigrant groups present in the United States after broad exclusion was introduced in 1917 and 1924, the South Asian population had the most severe gender gap. This led to many of the Punjabi Sikhs in California at the time to marry women of Mexican descent, avoiding anti-miscegenation laws and racial prejudice that prevented them from marrying into white communities.
Two important Supreme Court cases in the exclusion era determined the citizenship status of Asian Americans. In 1922, the Court