Do I Need to Carry My Passport in the USA?

Whether you need to carry your passport in the USA depends on your citizenship. U.S. citizens have no legal duty to carry a passport anywhere inside the country. Foreign nationals aged 18 or older are in a different position entirely: federal law requires them to carry proof of their immigration registration at all times, and not doing so is a federal misdemeanor.¹

U.S. Citizens: No Carry Requirement

A state-issued driver’s license or ID card handles almost every domestic identification need, from age-restricted purchases to interactions with police. The passport’s legal role for citizens is international. Under federal law, U.S. citizens generally must bear a valid passport when leaving or entering the country.² Inside the U.S., you can leave it at home.

The one domestic setting where ID rules have tightened is air travel. Since May 7, 2025, you need a REAL ID-compliant driver’s license, state ID, or another TSA-accepted document to board a domestic flight or enter certain federal facilities.³ A U.S. passport or passport card satisfies that requirement, so if your license isn’t compliant, the passport works as a backup.⁴ TSA also accepts military IDs, permanent resident cards, trusted traveler cards like Global Entry and NEXUS, and certain mobile driver’s licenses from participating states.⁵

If you skip the passport and your ID isn’t accepted, the consequence is inconvenience, not a penalty: a missed flight, a delay at a federal building, or a longer conversation with an officer verifying your identity through other means.

Foreign Nationals: Yes, and Here’s What Counts

Every noncitizen aged 18 or older must have their alien registration document on their person at all times.¹ What counts as that document depends on your status.

Lawful permanent residents carry the green card. Form I-551 is the alien registration receipt card, and both federal regulations and USCIS guidance require you to keep a valid, unexpired card with you.⁶

Nonimmigrants — tourists, students, temporary workers, and others admitted for a specific purpose — rely on the Form I-94 Arrival/Departure Record as evidence of registration.⁷ USCIS confirms that anyone issued an I-94 or I-94W upon admission is already registered.⁸

Holders of an Employment Authorization Document (Form I-766) have a valid immigration document that establishes identity and work authorization. Carrying the EAD alongside your I-94 gives a fuller picture of your status, though the I-94 is what technically satisfies the registration requirement.

Your passport itself is not the registration document, but it’s the foundation of the whole set: it holds your visa stamp, it matches the I-94, and it proves your identity. Most immigration attorneys would advise against leaving the hotel without it.

The Electronic I-94 Problem

Since 2013, CBP has stopped automatically issuing paper I-94 forms at airports and seaports. Your arrival record is generated electronically, and you retrieve and print it from the CBP I-94 website. CBP states that the printout is “your lawful record of admission” and that “if someone requests your admission information, this is the form you would provide.”⁹

The carry statute was written long before electronic records existed, so relying only on a phone screenshot is risky. A dead battery or no signal could leave you unable to pull it up when it matters. Print the I-94 and keep it with the passport page showing your visa stamp.

The 100-Mile Border Zone

Immigration enforcement isn’t limited to airports and border crossings. Under federal regulations, Border Patrol agents can operate within 100 air miles of any U.S. external boundary, and coastlines count.¹⁰ That zone covers entire states such as Florida, Hawaii, and Connecticut, plus major cities including New York, Los Angeles, Chicago, and Houston.

Inside the zone, Border Patrol runs fixed and temporary checkpoints. Agents may ask about citizenship and request documents proving immigration status, even without individualized suspicion.¹⁰ You are not required to consent to a vehicle search beyond that initial questioning, but you should expect the citizenship question.

For foreign nationals, this makes the carry rule more than theoretical. Hitting a checkpoint on a road trip through the Southwest or along the Eastern Seaboard is a realistic scenario.

What Happens If You Don’t Carry Your Documents

A foreign national caught without a registration document faces a federal misdemeanor: a fine of up to $100, up to 30 days in jail, or both.¹ The fine is modest. The real risk is the encounter. Being unable to prove your legal status on the spot can lead to extended questioning, temporary detention while your identity is verified, and in some cases arrest by CBP or ICE. Even if things get sorted out, an arrest record can complicate future immigration applications.

U.S. citizens face no legal penalty for not carrying a passport domestically.

If Your Documents Are Lost or Stolen

Losing immigration documents inside the U.S. creates two problems at once: you’re out of compliance with the carry requirement, and you have an administrative fix ahead of you.

For a lost or stolen passport, file a police report and contact your country’s embassy or consulate. Most embassies can issue a replacement, though processing times and fees vary.¹¹ The police report also creates a paper trail if the stolen passport is later used for identity fraud.

For a lost green card, file Form I-90 with USCIS to request a replacement. You can file online through a USCIS account or by mail.⁶ Fees change; check the current USCIS fee schedule before filing.

For a lost EAD, file Form I-765 as a replacement. You’ll need a copy of your previous EAD (front and back), a government-issued ID such as your passport, two passport-style photos, and the current filing fee. If the EAD was stolen, include a copy of the police report.

While waiting for replacements, print your I-94 from the CBP website as evidence you were lawfully admitted.⁹ It won’t fully substitute for a green card or EAD, but it gives you something to show if your status is questioned.

Practical Habits

Foreign nationals should carry originals when out — the law requires it — but store them in a hotel safe or other secure location during extended stays when you’re not planning to go far. When you do carry them, split them up. Passport in an interior jacket pocket, green card in a wallet, printed I-94 folded in another pocket. Losing one bag shouldn’t mean losing everything.

Keep digital backups regardless of your status. Photograph every page of your passport (including blank visa pages), your green card or EAD (front and back), and your I-94. Store them in encrypted cloud storage or a password-protected app you can reach from any device. Digital copies won’t satisfy a legal demand for originals, but they make replacement faster because you’ll have every document number ready for embassy applications and USCIS forms.

If documents are stolen, file a police report right away. It helps with immigration follow-up, it’s often required by identity theft recovery services, and it can be essential evidence if your stolen passport is later used fraudulently.

1
Office of the Law Revision Counsel. 8 USC 1304 – Forms for Registration and Fingerprinting
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Office of the Law Revision Counsel. 8 USC 1185 – Travel Control of Citizens and Aliens
3
Transportation Security Administration. Are You REAL ID Ready?
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U.S. Department of State. U.S. Passports and REAL ID
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Transportation Security Administration. Acceptable Identification at the TSA Checkpoint
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U.S. Citizenship and Immigration Services. Application to Replace Permanent Resident Card (Green Card)
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eCFR. 8 CFR 264.1 – Registration and Fingerprinting
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U.S. Citizenship and Immigration Services. Alien Registration Requirement
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U.S. Customs and Border Protection. I-94/I-95 Website – Official Site for Travelers Visiting the United States
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U.S. Customs and Border Protection. Legal Authority for the Border Patrol
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U.S. Department of State. Lost and Stolen Passports, Visas, and Arrival/Departure Records