The estimated population of unauthorized immigrants in the U.S. stands at around 11 million people. Although the number has stabilized, the United States has seen a spike in migrant encounters in the last few years, with over two million cases registered by the U.S. Border Patrol in 2023. This is a slight decrease from the previous year, when there were over 2.2 million cases registered. Due to its proximity and shared border, Mexico remains the leading country of origin for most undocumented immigrants in the U.S., with California and Texas being home to the majority.

Immigration and political division

Despite the majority of the population having immigrant roots, the topic of immigration in the U.S. remains one of the country’s longest-standing political debates. Support among Republicans for restrictive immigration has grown alongside Democratic support for open immigration. This growing divide has deepened the polarization between the two major political parties, stifling constructive dialogue and impeding meaningful reform efforts and as a result, has led to dissatisfaction from all sides. In addition to general immigration policy, feelings toward illegal immigration in the U.S. also vary widely. For some, it's seen as a significant threat to national security, cultural identity, and economic stability. This perspective often aligns with support for stringent measures like Trump's proposed border wall and increased enforcement efforts. On the other hand, there are those who are more sympathetic toward undocumented immigrants, as demonstrated by support for the Deferred Action for Childhood Arrivals (DACA) program.

In January 2022, it was estimated that about 1.85 million male illegal immigrants living in the United States were aged between 35 and 44 years old. In that same year, it was estimated that 1.52 million female illegal immigrants living in the U.S. were between 35 and 44 years old.

According to the source, the number of immigrants that arrived in Spain illegally in 2018 amounted to approximately 64,300, representing the peak of the period under consideration. In 2024, over 63,970 irregular immigrants arrived at the Mediterranean country.

The statistic shows the number of illegal immigrants living in the U.S. from 2000 to 2012, as estimated by the Department of Homeland Security. As of 2012, about 11.4 million illegal immigrants were living in the United States.

In 2022, the greatest number of illegal aliens apprehended in the United States were from Mexico, with 836,844 illegal aliens apprehended. Guatemala, Cuba, Honduras, and Venezuela rounded out the top five in that year.

Thailand Number of Aliens Work Permit: Pg: Illegal Immigrants data was reported at 4,705.000 Unit in Dec 2017. This records an increase from the previous number of 4,347.000 Unit for Nov 2017. Thailand Number of Aliens Work Permit: Pg: Illegal Immigrants data is updated monthly, averaging 4,461.000 Unit from Jan 2014 (Median) to Dec 2017, with 48 observations. The data reached an all-time high of 13,608.000 Unit in Mar 2017 and a record low of 2,460.000 Unit in Jan 2014. Thailand Number of Aliens Work Permit: Pg: Illegal Immigrants data remains active status in CEIC and is reported by Department of Employment. The data is categorized under Global Database’s Thailand – Table TH.G007: No of Aliens Work Permit.

Thailand Number of Aliens Work Permit: Illegal Immigrant data was reported at 66,483.000 Unit in Oct 2018. This records an increase from the previous number of 65,125.000 Unit for Sep 2018. Thailand Number of Aliens Work Permit: Illegal Immigrant data is updated monthly, averaging 25,261.000 Unit from Jan 1994 (Median) to Oct 2018, with 298 observations. The data reached an all-time high of 206,014.000 Unit in Nov 1997 and a record low of 4,557.000 Unit in Nov 1996. Thailand Number of Aliens Work Permit: Illegal Immigrant data remains active status in CEIC and is reported by Office of Foreign Workers Administration (Work Permit). The data is categorized under Global Database’s Thailand – Table TH.G007: No of Aliens Work Permit.

According to the source, 9,662 irregular migrants arrived in Spain in January 2021, which represented the highest number of irregular migrants of the study period, second only to October 2018, with 11010 cases. February, March and April tend to be the months with the lowest arrival of illegal migrants.

Acknowledgement

The following table is imported from the 2019 Yearbook of Immigration Statistics under the Department of Homeland Security:

The 2019 Yearbook of Immigration Statistics is a compendium of tables that provide data on foreign nationals who are granted lawful permanent residence (i.e., immigrants who receive a “green card”), admitted as temporary nonimmigrants, granted asylum or refugee status, or are naturalized. The Yearbook also presents data on immigration enforcement actions, including apprehensions and arrests, removals, and returns.

Table 39. Aliens Removed or Returned: Fiscal Years 1892 to 2019 (https://www.dhs.gov/immigration-statistics/yearbook/2019/table39)

Inspiration

The data was collected to observe trends in history reflecting the number of immigrants deported - more specifically removed or returned.

In 2023, there were over 380,000 illegal border crossings detected at the borders of the European Union, with the Central Mediterranean route detecting the highest number of crossings at 157,479.

Explore Illegal aliens through data • Key facts: number of authors, number of books, books, authors, publication dates, book publishers • Real-time news, visualizations and datasets

This statistic shows the number of undocumented immigrants caught in South Korea in 2018, broken down by country of origin. In that year, more than 138 thousand undocumented immigrants from Thailand and more than 71 thousand immigrants from China were caught. In total, around 355 thousand illegal immigrants were caught.

Thailand Number of Aliens Work Permit: Annual: Pg Illegal Immigrants data was reported at 73,692.000 Person in 2017. This records an increase from the previous number of 49,732.000 Person for 2016. Thailand Number of Aliens Work Permit: Annual: Pg Illegal Immigrants data is updated yearly, averaging 50,254.500 Person from Dec 2010 (Median) to 2017, with 8 observations. The data reached an all-time high of 73,692.000 Person in 2017 and a record low of 47,793.000 Person in 2010. Thailand Number of Aliens Work Permit: Annual: Pg Illegal Immigrants data remains active status in CEIC and is reported by Department of Employment. The data is categorized under Global Database’s Thailand – Table TH.G007: No of Aliens Work Permit.

Opinion on the right of everyone to live and work in any country. - Scale of sympathy towards different countries. - Degree of concern about the marriage of a child to a citizen of: Portugal, another EU country, USA, Eastern Europe, Latin America, Morocco, another North African country or some black African country. - Degree of refusal for children to share the same class at school with children from foreign immigrant families. - Degree of refusal to have as neighbors or co-workers citizens of the aforementioned countries. - Evaluation of the abolition of borders between the countries of the European Union and the free installation in Spain of its workers and professionals. - Opinion on the reception of political refugees. Topics that most concern Spaniards in general and the interviewee in particular: public services, the environment, housing, immigration, drugs, crime, unemployment, the political situation, labour disputes and the maintenance of living standards. - Assessment, in general terms, of immigration. - Opinion on the number of foreigners living in Spain. - Expectations of the increase of foreigners in Spain. - Comparison of Spain with France, Italy and Germany in the number of immigrants. Immediate thought when talking about foreign immigrants. - Opinion on the intention to stay of the majority of immigrants arriving in Spain. - Assessment of the laws that regulate the entry and stay of foreigners in Spain. - Opinion on the extension of the rights of foreign workers living in Spain. - Degree of control by the Spanish authorities of the illegal stay of foreigners in Spain. Opinion on the treatment of illegal immigrants: legalize/return them to their countries. - Knowledge of the process of regularization of Spanish immigrants being carried out by the Spanish authorities. - Opinion on the most appropriate policy for immigrant workers. - Opinion on immigration policies in the European Union. - Degree according to the annual quota, established by the Spanish Government, for the entry of immigrants. - Assessment of the living conditions of immigrants in Spain. - Living conditions of immigrant workers, comparing it with Spaniards. - Opinion on the facilities that could be given to foreign immigrants to: bringing family, housing, education, healthcare, work, association and religion. - Rights that every foreigner working in Spain should have. - Degree of agreement with the following opinions on immigrants: They do jobs that the Spaniards do not want to do, they lower wages, they take jobs away from the Spaniards, they favor crime. Opinion on whether or not immigrants in their integration should preserve their culture. - Treatment of Spaniards to immigrants in general and those of another race in particular. - Relations with immigrants. - Time of residence outside Spain and countries in which you have lived. - Reasons for having lived abroad. - Assessment of the treatment of foreigners in general and Spaniards in particular, outside Spain. - Assessment of violent attacks on foreign immigrants in Spain. - Expectations for Spain of violent actions against foreign immigrants. Attitude to the rise of certain European political parties with racist ideology. - Opinion on the degree of acceptance in Spain of a political party with racist ideology. - Political ideology scale of the interviewee. - Remembrance of the vote in the 1996 general election.

This dataset is about book subjects. It has 3 rows and is filtered where the books is The rhetoric of closed borders : quotas, lax enforcement and illegal migration. It features 10 columns including number of authors, number of books, earliest publication date, and latest publication date.

• Nationality of the person interviewed.
• Assessment of the protection offered by the State to different groups.
• Definition of immigration.
• Origin of immigrants that is most immediately thought of.
• Assessment of the number of immigrants currently in Spain
• Scale of importance (0-10) of different aspects to allow the entry of an immigrant to Spain.
• More appropriate policy regarding the regularization of illegal immigrants.
• More appropriate policy for asylum seekers.
• Degree of tolerance of the laws regulating the entry of immigrants into Spain.
• Rating scale (0-10) of the coexistence in Spanish society of people from different countries, cultures, religions and skin color.
• Treatment of foreign immigrants by Spaniards and a factor that has a greater influence on this treatment.
• Treatment of foreign immigrants to Spaniards
• Positioning before the rights that stable and legal immigrants should have.
• Degree according to phrases on health care, education and immigrants.
• Assessment of the compensation received by immigrants with respect to what they contribute.
• Positive and negative aspects of immigration.
• Permissiveness with cultural and religious aspects of immigrants.
• Degree of contribution of immigrants to the enrichment of Spanish culture.
• Degree according to phrases about the world of work and immigrants in Spain.
• Degree of approval of situations resulting from the relationship between immigrants and natives.
• Positive/negative assessment of immigration to Spain.
• Acceptance of different types of relationship with immigrants and Roma people.
• Presence of immigrants and Roma people among their neighbours, co-workers or students, friends and family.
• Sympathy/antipathy towards different groups of immigrants and reason for antipathy towards them.
• Assessment of violent actions of immigrants against Spaniards as a problem.
• Frequency of violent actions against immigrants.
• Punishment of citizens who utter racist insults and those who publicly express opinions that incite xenophobia, racism and intolerance.
• Degree of acceptance of a racist party in Spain.
• Perception of comments against immigrants and origin of such comments.
• Degree of attention paid in the media to the issue of immigration.
• Assessment of the image conveyed by the media about immigrants.
• Confidence scale (0-10) in people.
• Scale of racism (0-10).
• Ideological self-location scale (0-10).
• Voter turnout and recall in the 2016 general election.
• Possession of children of non-university school age and type of school in which they study.
• Type of health service, public or private, used.
• The marital status of the person interviewed and the cohabitation status of unmarried persons.
• Place of birth of the couple (country) and year of arrival in Spain of the couple/spouse if he/she was not born in Spain.
• Permanence and residence time of the person interviewed in the city or town.
• Residence abroad of parents/relatives.
• Religiousness, confession and degree of religious practice of the person interviewed.
• Assessment of personal economic situation.
• Subjective social class of the person interviewed.
• Retrospective possibility (5 years) of being unemployed.
• Personal and household income.
• Place of birth of the person interviewed.