Why It Matters

Nearly 50,000 foreign nationals are currently serving in the U.S. Armed Forces, and more than 125,000 non-citizen veterans live in the United States today. But the Trump Administration's immigration enforcement surge is increasingly ensnaring the very people who wear or wore the uniform, according to a Congressional Research Service report updated May 13.

Military enlistment immigration policy has long permitted lawful permanent residents to serve, with a pathway to citizenship as part of the implicit bargain. But foreign nationals who separate from service without naturalizing remain fully subject to deportation if they commit a deportable offense. When enforcement is low-key, the gap between "served honorably" and "became a citizen" rarely surfaces. When interior enforcement accelerates, it matters.

DHS data provided to Congress shows that 125 alien veterans were arrested in the single year between January 20, 2025 and January 26, 2026. That is the same number arrested across the entire seven-year period from fiscal year 2018 through fiscal year 2024.

An April 2025 ICE memorandum quietly dropped language from a 2022 directive that had designated active-duty service by an immediate family member as "a significant mitigating factor" in enforcement decisions. Media reports cited in the CRS report document the consequences, including a newlywed spouse of a soldier training to deploy detained by ICE in April 2026 and military spouses arrested at San Diego green card interviews in November 2025.

The Big Picture

The legal framework governing non-citizen armed forces members dates to the Civil War era, but its modern architecture rests on the Immigration and Nationality Act. Two provisions govern how service can translate into citizenship.

Under INA Section 328, a lawful permanent resident who serves honorably for at least one year during peacetime may apply for expedited naturalization, bypassing the standard five-year residency requirement if they file while still in service or within six months of separation. Under INA Section 329, a foreign national who serves during a designated period of hostilities may naturalize immediately upon establishing honorable service, without even needing to be a permanent resident first. The War on Terrorism period, designated by President George W. Bush beginning September 11, 2001, remains in effect.

Since World War I, approximately 818,000 foreign nationals have naturalized through military service. In the years since 2001 alone, roughly 148,000 have done so. Military naturalization applications reached nearly 20,000 in fiscal year 2025. The CRS report attributes that figure in part to Biden-era promotion efforts, targeted service branch recruitment of non-citizens, and the prospect that naturalization could provide discretionary protection for unauthorized relatives amid rising enforcement. Some recruits were joining in part to shield family members from deportation, but the erosion of that protection under current policy may reshape the figures.

The MAVNI Suspension

The now-suspended Military Accessions Vital to the National Interest (MAVNI) program sits at the intersection of military recruitment immigration policy and national security. Authorized by DOD in 2008, MAVNI allowed enlistment of asylees, refugees, holders of Temporary Protected Status, certain visa holders, and, beginning in 2014, DACA recipients, provided they possessed critical language or medical skills. From 2008 to 2016, 10,400 individuals enlisted through the program.

DOD suspended MAVNI in 2016 after a Pentagon Inspector General investigation found that several thousand non-citizens had been allowed to enter the military without completed background investigations, and that some applicants had received visas "to attend universities that did not exist." The fiscal year 2019 National Defense Authorization Act subsequently codified new security standards, capped enlistments at 1,000 per military department per year without written congressional notice, and required that any future enlistees under the "vital to the national interest" authority possess a critical skill they would use in their primary daily duties. As of the report's publication date, DOD has not resumed the program.

The MAVNI suspension has a downstream consequence for the current debate. DACA recipients and TPS holders, whose statuses the current administration has moved to curtail, were among those who had been eligible to serve. If those statuses are revoked for individuals currently serving, the report identifies unresolved questions about their naturalization eligibility and military status.

The Naturalization Gap

A 2022 Government Accountability Office report found that not all military branches had consistent processes to inform non-citizen service members of their naturalization eligibility. The Navy, Air Force, and Coast Guard had such processes, the Army had taken some steps, but the Marine Corps did not. GAO recommended DOD ensure that all services developed and maintained such processes. As of the CRS report's publication, that recommendation remained only partially addressed.

DHS has separately acknowledged that some veterans failed to naturalize because they incorrectly assumed military service automatically conferred citizenship. The foreign service members citizenship gap, in other words, is partly a paperwork and information problem, not only a policy one.

Political Stakes

For the Administration

The administration has made military strength and recruitment a priority while simultaneously executing the most aggressive interior immigration enforcement in recent memory. The CRS data showing a one-year arrest total matching seven years of prior enforcement provides Democrats and some Republicans with a concrete line of attack, namely that the administration is deporting people who served.

Former DHS Secretary Kristi Noem stated in a February 2026 letter to Senator Elizabeth Warren that it is "rare" for active service members to be subject to removal, and that ICE does not statistically track active alien service members. But individual cases continue to accumulate and gain public attention.

The September 2025 U.S. Citizenship and Immigration Services (USCIS) decision to rescind guidance that allowed naturalization interviews and oath ceremonies at ports of entry for deported veterans came as an executive order signed on the administration's first day. That action closed a pathway that the Biden administration had specifically created to address deported veterans. Reopening it would require either a new executive action or legislation.

For Congress

The foreign nationals U.S. military issue is one of the few immigration topics that generates genuine bipartisan discomfort. In September 2025, a bipartisan group of senators including Warren, Tammy Duckworth, and Richard Durbin wrote to DHS and DOD raising concerns about deportations of military families.

Legislation introduced in the current 119th Congress includes H.R. 4316 and S. 2526, which would expand enlistment eligibility, and H.R. 5535 and S. 3144, which would address veteran removals. None has advanced. The recurring pattern outlined in the CRS report is that bills are introduced, hearings are held, and recommendations are made, but the underlying statutory gap is left unresolved.

Some members have opposed expansion measures, citing national security concerns tied to the MAVNI experience. Others have raised concerns about provisions that would facilitate the return of veterans removed for serious offenses that are not classified as crimes of violence, such as drug trafficking.

For the Public

Approximately 46 percent of the estimated 125,440 non-citizen veterans currently residing in the United States served during the War on Terrorism, according to CRS analysis of the 2024 American Community Survey. These are people who served in Iraq and Afghanistan and came home without a passport that acknowledges their service.

The Bottom Line

The gap between military service and citizenship has become an enforcement flashpoint. The one-year arrest data is the sharpest evidence that current policy is producing outcomes that at least some in Congress, and likely some in the military chain of command, find difficult to defend.

Congress has repeatedly introduced legislation to address both the enlistment eligibility question and the veteran deportation question, but has repeatedly declined to act. The result is a policy built on executive discretion, and the current administration has exercised that discretion in a way that the prior administration explicitly reversed. Without a statutory fix, the next administration can reverse it again.

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