Immigration to the United States has been a major source of population growth and cultural change throughout much of its history. In absolute numbers, the United States has by far the highest number of immigrants in the world, with 50,661,149 people as of 2019. This represents 19.1% of the 244 million international migrants worldwide, and 14.4% of the United States' population. In 2018, there were almost 90 million immigrants and U.S.-born children of immigrants in the United States, accounting for 28% of the overall U.S. population.
Emigration is the act of leaving a resident country or place of residence with the intent to settle elsewhere. Conversely, immigration describes the movement of people into one country from another. A migrant emigrates from their old country, and immigrates to their new country. Thus, both emigration and immigration describe migration, but from different countries' perspectives.
The libertarian perspective on immigration is often regarded as one of the core concepts of libertarian theory and philosophy. There is considerable disagreement among libertarians as to what stance towards immigration best accords with libertarian principles. Some hold that restrictions on immigration are an infringement of the rights of immigrants and other property owners and constitute a threat to individual liberty. Others maintain that open borders amount to a policy of forced integration on the part of the state, and that protecting the rights of property holders requires that present governments adopt much more discriminatory policies on who is allowed to enter a country.
"Human migration is the movement of people from one place in the world to another.".
The Immigration Act of 1924, or Johnson–Reed Act, including the Asian Exclusion Act and National Origins Act, was a federal law that prevented immigration from Asia and set quotas on the number of immigrants from Eastern and Southern Europe. It also authorized the creation of the country's first formal border control service, the U.S. Border Patrol, and established a "consular control system" that allowed entry only to those who first obtained a visa from a U.S. consulate abroad.
Since 1945, immigration to the United Kingdom, controlled by British immigration law and to an extent by British nationality law, has been significant, in particular from the Republic of Ireland and from the former British Empire, especially India, Bangladesh, Pakistan, the Caribbean, South Africa, Nigeria, Ghana, Kenya, and Hong Kong. Since the accession of the UK to the European Communities in the 1970s and the creation of the EU in the early 1990s, immigrants relocated from member states of the European Union, exercising one of the European Union's Four Freedoms. In 2021, since Brexit came into effect, previous EU citizenship's right to newly move to and reside in the UK on a permanent basis does not apply anymore. A smaller number have come as asylum seekers seeking protection as refugees under the United Nations 1951 Refugee Convention.
Immigration law includes the national statutes, regulations, and legal precedents governing immigration into and deportation from a country. Strictly speaking, it is distinct from other matters such as naturalization and citizenship, although they are sometimes conflated. Countries frequently maintain laws that regulate both the rights of entry and exit as well as internal rights, such as the duration of stay, freedom of movement, and the right to participate in commerce or government.
Immigration is the international movement of people to a destination country of which they are not usual residents or where they do not possess nationality in order to settle as permanent residents. Commuters, tourists, and other short-term stays in a destination country do not fall under the definition of immigration or migration; seasonal labour immigration is sometimes included, however.
Foreign nationals (aliens) can violate US immigration laws by entering the United States unlawfully or lawfully entering but then remaining after the expiration of their visas, parole, or temporary protected status. Illegal immigration has been a matter of intense debate in the United States since the 1980s.
Opposition to immigration, also known as anti-immigration, is a political ideology that seeks to restrict the incoming of people from one area to another. In the modern sense, immigration refers to the entry of people from one state or territory into another state or territory in which they are not citizens in contrast, but closely correspond to emigration which refers people leaving one state or territory in which they are citizens. Illegal immigration occurs when people immigrate to a country without having official permission to do so. Opposition to immigration ranges from calls for various immigration reforms, to proposals to completely restrict immigration, to calls for repatriation of existing immigrants.
Illegal immigration is the migration of people into a country in violation of that country's immigration laws, or the continuous residence in a country without the legal right to. Illegal immigration tends to be financially upward, from poorer to richer countries. Illegal residence in another country creates the risk of detention, deportation, and/or other sanctions.
Immigration to Greece percentage of foreign populations in Greece is 7.1% in proportion to the total population of the country. Moreover, between 9 and 11% of the registered Greek labor force of 4.4 million are foreigners. Migrants additionally make up 25% of wage and salary earners.
The history of immigration to the United States details the movement of people to the United States from the colonial era to the present day. Throughout U.S. history, the country experienced successive waves of immigration, particularly from Europe and later on from Asia and Latin America. Colonial-era immigrants often repaid the cost of transoceanic transportation by becoming indentured servants in which the new employer paid the ship's captain. In the late 19th century, immigration from China and Japan was restricted. In the 1920s, restrictive immigration quotas were imposed but political refugees had special status. Numerical restrictions ended in 1965. In recent years, the largest numbers of immigrants to the United States have come from Asia and Central America.
Immigration to Malaysia is the process by which people migrate to Malaysia to reside in the country. The majority of these individuals become Malaysian citizens. After 1957, domestic immigration law and policy went through major changes, most notably with the Immigration Act 1959/63. Malaysian immigration policies are still evolving.
An open border is a border that enables free movement of people between jurisdictions with no restrictions on movement and is lacking substantive border control. A border may be an open border due to intentional legislation allowing free movement of people across the border, or a border may be an open border due to a lack of legal controls, a lack of adequate enforcement or adequate supervision of the border. An example of the former is the Schengen Agreement between most members of the European Economic Area. An example of the latter has been the border between Bangladesh and India, which is becoming controlled. The term "open borders" applies only to the flow of people, not the flow of goods and services, and only to borders between political jurisdictions, not to mere boundaries of privately owned property.
The 2014 American immigration crisis was a surge in unaccompanied children and women from the Northern Triangle of Central America (NTCA) seeking entrance to the United States in 2014. According to U.S. law, an unaccompanied alien child refers to a person under 18 years of age, who has no lawful immigration status in the U.S., and who does not have a legal guardian to provide physical custody and care.
Migrant crisis is the intense difficulty, trouble, or danger situation in the receiving state due to the movements of large groups of immigrants escaping from the conditions which negatively affected their situation at the country of origin (departure). The "crisis" situation is not the refugee numbers but the system's failure to respond in an orderly way to the government's legal obligations. Some notable crises are; European migrant crisis, English Channel migrant crisis and World War II evacuation and expulsion.
Immigration to the United States has many effects on the culture and politics of the United States.
Externalization describes the efforts of wealthy, developed countries to prevent asylum seekers and other migrants from reaching their borders, often by enlisting third countries or private entities. Externalization is used by Australia, Canada, the United States, the European Union and the United Kingdom. Although less visible than physical barriers at international borders, externalization controls or restrict mobility in ways that are out of sight and far from the country's border. Examples include visa restrictions, sanctions for carriers who transport asylum seekers, and agreements with source and transit countries. Consequences often include increased irregular migration, human smuggling, and border deaths.
Discrimination based on nationality is discriminating against a person based on their nationality, country of citizenship, or national origin. Although many countries' non-discrimination laws contain exceptions for nationality and immigration status, nationality is related to race and religion, so direct discrimination on the basis of nationality may be indirect discrimination on racial or religious grounds. Discrimination "against any particular nationality" is prohibited by the International Convention on the Elimination of All Forms of Racial Discrimination (CERD).
