The Immigration Agencies Explained: USCIS, ICE, CBP, and EOIR

Four different federal agencies handle U.S. immigration, and they are not interchangeable. USCIS decides who gets an immigration benefit - a green card, a work permit, citizenship. CBP controls the border and every port of entry. ICE handles enforcement inside the country, including arrests, detention, and removal. And EOIR, the immigration courts, is part of the Department of Justice - not the Department of Homeland Security - and acts as the neutral judge between the government and the person in proceedings. Knowing which of these four has your case changes where you send documents, what deadline applies to you, and what kind of help you need.

The short version: who does what

• USCIS (U.S. Citizenship and Immigration Services) - part of DHS. Adjudicates benefit applications: family- and employment-based green cards, naturalization, work authorization (EAD), affirmative asylum applications, Temporary Protected Status registration, and similar petitions filed on forms that start with "I-" (I-130, I-485, I-765, I-589, and others).
• CBP (U.S. Customs and Border Protection) - part of DHS. Inspects and admits (or turns away) people at land, air, and sea ports of entry, and patrols the areas between ports through the Border Patrol. Issues the I-94 arrival/departure record that shows how long you're authorized to stay.
• ICE (U.S. Immigration and Customs Enforcement) - part of DHS. Enforces immigration law inside the country through two main branches: Enforcement and Removal Operations (arrests, detention, deportation) and Homeland Security Investigations (criminal investigations, including of immigration and customs crimes).
• EOIR (Executive Office for Immigration Review) - part of the Department of Justice, separate from DHS entirely. Its immigration judges hear removal cases and defensive asylum claims; its Board of Immigration Appeals (BIA) hears appeals of those decisions. EOIR does not investigate or arrest anyone - it decides cases that DHS agencies bring before it.

Why the DHS/DOJ split matters

Three of these agencies - USCIS, CBP, and ICE - sit inside the Department of Homeland Security. They are the government's immigration service and enforcement arm: they process applications, guard the border, and carry out arrests and removals. EOIR sits inside the Department of Justice and functions as a court system. This separation exists precisely so the agency deciding whether someone can be removed from the country is not the same agency trying to remove them. When ICE brings a case to an immigration judge, ICE is acting as the prosecuting party; the immigration judge, employed by EOIR, is supposed to weigh the case neutrally, and the BIA reviews the judge's decision on appeal. Understanding this split helps explain why a document from "the government" might come from a courthouse (EOIR) rather than an enforcement office (ICE), and why appealing a court decision does not go back to ICE - it goes to the BIA.

How the four agencies interact in a typical case

1. Entry or encounter: CBP is usually the first agency a person meets, whether at an airport, a land border crossing, or between ports of entry. CBP decides admission, parole, or refers a person to further proceedings.
2. Filing for a benefit: If someone applies for a green card, work permit, asylum, or naturalization while inside the country, that application generally goes to USCIS, which reviews evidence, may schedule a biometrics appointment or interview, and issues a decision.
3. Enforcement inside the country: If ICE identifies someone as removable - for example, after a criminal conviction, an expired status, or a denied application referred for enforcement - ICE may arrest, detain, and issue or execute a Notice to Appear, which starts removal proceedings.
4. The court case: Once a Notice to Appear is filed with the immigration court, the case belongs to EOIR. An immigration judge hears the case, DHS (usually represented by ICE trial attorneys) argues for removal, and the person - or their attorney - presents defenses, including applications like asylum, cancellation of removal, or adjustment of status filed defensively in court rather than with USCIS.
5. Appeal: A losing party can appeal the immigration judge's decision to the BIA, still within EOIR, and in limited circumstances further to a federal circuit court.

A single person can interact with all four agencies over the life of one immigration story - inspected by CBP, petitioned through USCIS, then placed in enforcement or court proceedings through ICE and EOIR - which is exactly why people get confused about "who has my case" at any given moment.

How to tell which agency currently has your case

• A receipt notice or decision on a form beginning with "I-" (I-130, I-485, I-765, I-589 filed affirmatively, I-751, N-400) generally means USCIS has your case.
• An I-94 record, a referral to secondary inspection, or a parole document generally involves CBP.
• Being taken into custody, an ICE check-in requirement, an ankle monitor, or an ICE detainer means ICE is handling enforcement, even if a court case is proceeding at the same time.
• A Notice to Appear, a hearing notice, or any document referencing an immigration judge or the Board of Immigration Appeals means EOIR has the legal case.

Each agency has its own official case-status tool: USCIS's online case status system for benefit applications, EOIR's automated case information line and website for hearing dates and court decisions, and CBP's I-94 website for arrival/departure records. Use the tool that matches the agency that actually has your document - checking the wrong one will not show anything useful.

Deadlines to watch, no matter which agency you're dealing with

Some of the most damaging mistakes in immigration cases happen because a deadline passed unnoticed. A few durable ones to know:

• Asylum's one-year filing rule. With limited exceptions, an asylum application generally must be filed within one year of arrival in the United States.
• I-751 window. A conditional permanent resident generally must file to remove the conditions on residence in the roughly 90-day window before the two-year conditional card expires.
• I-94 expiration. Overstaying the date on your I-94 can trigger unlawful presence consequences - know your expiration date and confirm it on CBP's I-94 site.
• Appealing an immigration judge's decision to the BIA. The standard deadline has long been 30 days from the decision, but this deadline has recently been the subject of federal rulemaking and litigation. Always confirm the exact deadline stated on your own decision or with EOIR directly - do not rely on a remembered number.
• Motions to reopen. These generally must be filed within a limited window (commonly 90 days) after a final order, with narrow exceptions.

Because deadlines and procedures around EOIR appeals have changed and been challenged in court recently, treat any specific number you read - including in this article - as a starting point to verify, not a final answer. Confirm current deadlines directly with EOIR (justice.gov/eoir), USCIS (uscis.gov), or the notice you personally received.

What to do

1. Find your most recent official notice and identify which agency issued it (check the letterhead and form numbers).
2. Use that agency's own case-status tool to confirm your case is still where you think it is.
3. Write down every deadline on every notice you've received, and calendar it - do not estimate from memory.
4. If you're unsure which agency has your case, or you've received a Notice to Appear, consult a qualified immigration attorney or a Department of Justice-accredited representative promptly, since court deadlines can be short and unforgiving.
5. Never ignore a hearing notice, even if you think it was sent to the wrong address or you missed it by accident - contact the immigration court or an accredited representative immediately rather than waiting.

Beware notario and immigration-consultant fraud

People calling themselves a "notario," immigration consultant, or paralegal are often not authorized to practice immigration law and can give incorrect advice that causes missed deadlines, denied applications, or removal. Only a licensed attorney or a representative accredited by the Department of Justice may lawfully represent you in immigration matters. Verify credentials before paying anyone or signing anything, and never let someone else complete or submit forms in your name without a clear, honest explanation of what they say.

This article is general information, not legal advice, and does not create an attorney-client relationship. Immigration consequences can be severe and time-sensitive - consult a qualified immigration attorney or a DOJ-accredited representative about your specific situation.