August 15, 2021
Biden launches Operation Allies Welcome to resettle 76,000 Afghans after U.S. withdrawal
Largest U.S. refugee operation since Vietnam evacuates Afghans who aided American military operations
August 15, 2021
Largest U.S. refugee operation since Vietnam evacuates Afghans who aided American military operations
President Biden directed the Department of Homeland Security to lead Operation Allies Welcome on Aug. 29, 2021, as a whole-of-government effort to evacuate, process, and resettle vulnerable Afghans following the Taliban's takeover of Kabul on Aug. 15, 2021. The operation came three days after the devastating Abbey Gate bombing on Aug. 26 that killed 13 U.S. service members and approximately 170 Afghan civilians. Over 190,000 Afghans were ultimately resettled through both Operation Allies Welcome and its successor program Enduring Welcome, making it one of the largest refugee resettlement operations in U.S. history—comparable to the evacuation of Vietnamese refugees in 1975.
Between Jul. 2021 and Mar. 2022, approximately 73,000 Afghans were paroled into the United States under Operation Allies Welcome using humanitarian parole authority under Immigration and Nationality Act Section 212(d)(5). Humanitarian parole provides temporary legal status for up to two years but doesn't confer permanent immigration status or a pathway to citizenship. More than 40% of those brought to the U.S. were eligible for Special Immigrant Visas (SIVs) because they worked directly with U.S. forces, the U.S. embassy, or other government agencies over the prior two decades. SIV holders receive green cards and permanent residency, while humanitarian parolees must separately apply for asylum or other immigration status.
The evacuation operation ran from Aug. 14-30, 2021, at Hamid Karzai International Airport in Kabul, with the U.S. military securing the airport after the Afghan government collapsed. At peak capacity, approximately 8,000 people were evacuated daily on U.S. military cargo planes. The chaotic scenes included desperate Afghans clinging to departing aircraft, with at least six people falling to their deaths or being crushed. The evacuation ended abruptly on Aug. 30, leaving behind an estimated 100,000-200,000 Afghans who had worked with coalition forces or faced Taliban persecution. Processing occurred at transit sites in Qatar, Germany, and other locations before evacuees flew to the United States.
The Abbey Gate suicide bombing on Aug. 26, 2021, at 5:36 p.m. Kabul time, killed 13 U.S. service members (11 Marines, 1 Army soldier, 1 Navy corpsman) and approximately 170 Afghan civilians who were waiting at the airport gate for evacuation. The bomber, identified as Abdul Rahman al-Logari, was an ISIS-K operative who had been held in a coalition detention facility in Afghanistan but was freed when the Taliban emptied prisons after taking control. The bomber carried 20 pounds of explosives packed with ball bearings that explosively directed through the dense crowd. Pentagon investigations determined it was a single suicide bomber, not the complex attack initially reported, and concluded the attack was not preventable given the density of crowds and security constraints.
All Afghan evacuees underwent multi-layered security vetting conducted by approximately 400 personnel from federal agencies including DHS, FBI, Department of Defense, National Counterterrorism Center, and intelligence community partners. The vetting process involved biometric screenings (fingerprints, photos, iris scans) and biographic data checks against terrorist watch lists and law enforcement databases. However, the expedited timeline meant some screenings were abbreviated compared to normal refugee vetting, which typically takes 18-24 months. A 2024 DHS Inspector General report found some data inaccuracies in evacuee files, and a Jun. 2025 Department of Justice report noted that 55 individuals evacuated under Operation Allies Welcome were later identified on terrorism watch lists, though the FBI concluded the majority posed no security risk.
The federal government appropriated $6.3 billion in 2021 for Afghan resettlement efforts, including Operation Allies Welcome, covering housing and care at military bases, medical services, employment assistance, and integration support. By 2025, total spending exceeded $14 billion according to reporting citing the Office of Inspector General. One major resettlement site, Joint Base McGuire-Dix-Lakehurst in New Jersey, spent over $626 million by early 2022. Eight U.S. military bases served as temporary housing: Fort Lee and Fort Pickett in Virginia, Holloman Air Force Base in New Mexico, Marine Corps Base Quantico in Virginia, Fort McCoy in Wisconsin, Fort Bliss in Texas, Joint Base McGuire-Dix-Lakehurst in New Jersey, and Camp Atterbury in Indiana. Afghans received medical care, vaccinations, English language instruction, job training, and connections to resettlement agencies before moving to communities across the United States.
Republican lawmakers, including President Trump during his 2024 campaign, heavily criticized Operation Allies Welcome as poorly planned and inadequately vetted.
Rep. Clay Higgins (R-LA) raised concerns in an Oct. 21, 2021, House hearing that individuals were being paroled into the U.S. interior or leaving military bases before proper vetting. After the Nov. 27, 2025, shooting of two National Guard members near the White House by an Afghan national who entered under Operation Allies Welcome, Trump called for re-examining every Afghan who entered under Biden and announced that U.S. Citizenship and Immigration Services would halt processing of all immigration requests for Afghan nationals indefinitely. Critics noted this punished 190,000 Afghans for one individual's alleged actions.
The temporary humanitarian parole status created long-term uncertainty for Afghan evacuees. Parole lasts only two years and doesn't provide a pathway to permanent residency unless parolees qualify through other channels such as asylum approval, marriage to U.S. citizens, or employer sponsorship. Congress failed to pass an Afghan Adjustment Act that would have provided a pathway to citizenship for the approximately 80,000 Afghans who entered on parole. As of 2025, many Afghan parolees face expiring work authorization and potential deportation back to Taliban-controlled Afghanistan, where they're considered traitors for assisting U.S. forces. Asylum approval rates for Afghans whose cases have been decided exceed 97%, but the Trump administration's Nov. 2025 freeze on asylum processing left thousands in limbo.
How many people did a single C-17 cargo plane evacuate in one flight on August 16, 2021?
True or false: The August 2021 Kabul airlift was the largest non-combatant evacuation in US military history.
Which federal agency led Operation Allies Welcome?
How many people were evacuated from Afghanistan during the August 2021 airlift?
How many Afghans were paroled into the US under Operation Allies Welcome between July 2021 and March 2022?
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Start QuizPresident of the United States
Secretary of Homeland Security
DHS Federal Coordinator for Operation Allies Welcome
Commander of U.S. Central Command
Secretary of State
Chairman of the Joint Chiefs of Staff
ISIS-K Suicide Bomber
Wounded Abbey Gate Survivor

U.S. Representative (R-LA), Ranking Member of Subcommittee on Border Security
Afghan National, Shooting Suspect