United States

=== Immigration ===
{{Main|Immigration to the United States|United States Border Patrol}}
[[File:Border USA Mexico.jpg|thumb|The [[Mexico–United States border wall]] between [[San Diego]] (left) and [[Tijuana]] (right)]]
America's immigrant population, 51 million, is by far the world's [[List of sovereign states and dependent territories by immigrant population|largest in absolute terms]].<ref name="UNdef">{{Cite web |author=((United Nations, Department of Economic and Social Affairs, Population Division)) |title=International Migrant Stock 2019 Documentation |url= https://www.un.org/en/development/desa/population/migration/data/estimates2/docs/MigrationStockDocumentation_2019.pdf |date=August 2019 |publisher=United Nations |access-date=June 19, 2023}}</ref><ref>{{Cite web|url=https://www.un.org/en/development/desa/population/migration/data/estimates2/data/UN_MigrantStockTotal_2019.xlsx|title=UN Migrant Stock Total 2019|publisher=United Nations|access-date=June 19, 2023}}</ref> In 2022, there were 87.7 million immigrants and [[Second-generation immigrants in the United States|U.S.-born children of immigrants]] in the United States, accounting for nearly 27% of the overall U.S. population.<ref>{{cite news|date=March 14, 2019|title=Frequently Requested Statistics on Immigrants and Immigration in the United States|work=[[Migration Policy Institute]]|url=https://www.migrationpolicy.org/article/frequently-requested-statistics-immigrants-and-immigration-united-states}}</ref> In 2017, out of the U.S. foreign-born population, some 45% (20.7&nbsp;million) were naturalized citizens, 27% (12.3&nbsp;million) were lawful permanent residents, 6% (2.2&nbsp;million) were temporary lawful residents, and 23% (10.5&nbsp;million) were unauthorized immigrants.<ref name="KeyFindings">{{cite web|date=June 17, 2019|title= Key findings about U.S. immigrants| url=https://www.pewresearch.org/fact-tank/2019/06/17/key-findings-about-u-s-immigrants/|publisher=Pew Research Center}}</ref> In 2019, the top countries of origin for immigrants were Mexico (24% of immigrants), India (6%), China (5%), the Philippines (4.5%), and El Salvador (3%).<ref>{{Cite web |date= September 21, 2021|title=Immigrants in the United States |url= https://www.americanimmigrationcouncil.org/sites/default/files/research/immigrants_in_the_united_states_0.pdf |access-date=August 18, 2023 |website =americanimmigrationcouncil.org}}</ref> The United States has led the world in [[refugee resettlement]] for decades, admitting more refugees than the rest of the world combined.<ref name="PewRefugees">{{cite web|title= Key facts about refugees to the U.S.|url=https://www.pewresearch.org/fact-tank/2019/10/07/key-facts-about-refugees-to-the-u-s/|author=Jens Manuel Krogstad|date=October 7, 2019|publisher=Pew Research Center}}</ref>