Immigration Offenses: Entry, Fraud, and Deportation Triggers

Federal immigration offenses cover a range of conduct, from crossing the border without inspection to using fake documents, smuggling other people in, hiring unauthorized workers, or returning after deportation. Penalties run from a six-month misdemeanor sentence to life in prison, and many of these offenses also carry permanent bars on ever lawfully returning to the United States. Some violations stay in civil administrative court, where the worst outcome is removal; others are prosecuted as federal crimes, with prison time and a lifelong record on top of deportation.

The specific statute, the person’s criminal history, and whether anyone was harmed or paid all shape where a given case lands on that spectrum.

Unlawful Entry and Illegal Reentry

Crossing outside an official port of entry, slipping past inspection, or lying to get through a checkpoint is a federal crime under 8 U.S.C. § 1325. A first offense is a misdemeanor carrying up to six months in prison, a fine, or both. A second or later offense becomes a felony, with up to two years.¹ Border agents run biometric checks on everyone they catch, so a repeat crossing that would have been a minor case the first time is treated far more harshly the second.

Coming back after a formal removal or denial of admission is a separate and more serious crime under 8 U.S.C. § 1326. The baseline is up to two years in federal prison, and the sentence climbs sharply with prior convictions:

Prior felony or three drug or violence misdemeanors: up to 10 years.
Prior aggravated felony: up to 20 years.²

Illegal reentry is one of the most heavily prosecuted federal immigration crimes. The only lawful route back after a removal is to obtain express government consent before trying to return, which is rarely granted.

Smuggling, Transporting, and Harboring

Helping someone enter or stay in the country illegally is a federal crime under 8 U.S.C. § 1324, whether or not money changes hands. The statute reaches a wide range of conduct: bringing someone across at an unauthorized location, driving them within the country, hiding them from authorities, or encouraging them to come or remain.³

Penalties scale with the seriousness of the conduct and whether it was done for profit:

Harboring or transporting without financial motive: up to 5 years per person.
Smuggling at an unauthorized crossing, or any offense done for profit: up to 10 years per person.
Causing serious bodily injury or putting lives at risk: up to 20 years.
Causing death: life in prison or the death penalty.³

There is no family exception. Helping a parent, sibling, or child enter unlawfully carries the same penalties as smuggling a stranger. Contacting a smuggler on a relative’s behalf or wiring money to pay for a crossing qualifies, and prosecutors use these cases against individuals, not just organized networks.

Document, Visa, and Marriage Fraud

Forging a visa, altering a border crossing card, or using someone else’s immigration documents is a federal crime under 18 U.S.C. § 1546. The ceiling climbs with repeat offenses and with any connection to drugs or terrorism:⁴

First or second offense: up to 10 years.
Third or later offense: up to 15 years.
Fraud tied to drug trafficking: up to 20 years.
Fraud tied to international terrorism: up to 25 years.

The same statute covers lying under oath on an immigration application. A single false statement on a visa form can trigger prosecution even if the applicant never set foot in the country, because investigators cross-check applications against government databases and look for conflicts in travel, employment, and biographical data.

Marriage fraud is handled separately under 8 U.S.C. § 1325(c). Entering a marriage solely to get around immigration restrictions carries up to five years in prison and a fine of up to $250,000.⁵ Both spouses can be charged, citizen and noncitizen alike. Officers investigate through separate interviews, home visits, and reviews of financial records, with inconsistencies about daily life and how the couple met being the usual trigger for a deeper look.

Hiring and Working Without Authorization

Federal law targets both sides of the hiring relationship. Under 8 U.S.C. § 1324a, every employer must verify each new hire’s identity and work eligibility through the Form I-9 process. Civil fines are per unauthorized worker and adjust annually for inflation. As of 2025:

First offense: $716 to $5,724 per worker.
Second offense: $5,724 to $14,308 per worker.
Third or later offense: $8,586 to $28,619 per worker.
I-9 paperwork violations: $288 to $2,861 per worker.⁶

Employers who engage in a pattern of knowingly hiring unauthorized workers face criminal prosecution, with fines of up to $3,000 per worker and up to six months in prison.⁷

On the worker’s side, using a fake Social Security number or someone else’s identity to pass I-9 verification can bring charges under multiple federal statutes, including identity theft, document fraud, and making false statements. Those charges can carry several years in federal prison and will almost certainly result in removal for a noncitizen. Mismatches flagged by the Social Security Administration are a common starting point for an investigation.⁸

Overstays and Unlawful Presence

Not every immigration violation is a crime. Overstaying a visa, meaning staying past the departure date on the Form I-94, is generally a civil matter, not a criminal one.⁹ But the consequences are heavy anyway, because unlawful presence triggers reentry bars once the person leaves:

More than 180 days but less than one year, followed by voluntary departure: three-year bar.
One year or more: ten-year bar.¹⁰

These bars take effect only after departure, which puts people who want to fix their status in a bind: leaving to apply from abroad can trigger a years-long ban.

A harsher provision applies to people who accumulate more than one year of unlawful presence in total, across multiple stays, or who have been formally removed, and who then reenter or try to reenter without being admitted. Those individuals are permanently inadmissible under 8 U.S.C. § 1182.¹¹ The only route back is to stay outside the country for at least 10 years and then obtain a special DHS waiver, which is rarely granted. A narrow exception exists for victims of domestic violence whose removal was tied to the abuse.

Falling out of status does not require an overstay. A student on an F-1 visa who drops below a full course load, or a worker who takes a job the visa does not authorize, loses status immediately and becomes subject to removal.

Criminal Convictions That Trigger Deportation

Ordinary criminal convictions, not just immigration-specific ones, can end a noncitizen’s time in the country. Two categories do most of the damage.

Aggravated Felonies

The term is misleading. The list under 8 U.S.C. § 1101(a)(43) covers more than 20 categories, some of which are neither aggravated nor felonies under state law. A theft conviction with a one-year sentence, a fraud case involving more than $10,000 in losses, or any drug trafficking charge can qualify, along with murder, sexual abuse, money laundering, firearms trafficking, and obstruction of justice where the sentence is at least a year.

The consequences are uniquely harsh. A noncitizen convicted of an aggravated felony is conclusively presumed deportable and is cut off from nearly every form of relief, including asylum, cancellation of removal, and voluntary departure.¹² Noncitizens who are not lawful permanent residents can be removed through an expedited administrative process without a full hearing, as quickly as 14 days after the order is issued. Anyone removed after an aggravated felony conviction is permanently inadmissible and faces up to 20 years in prison if they return illegally.²

Crimes Involving Moral Turpitude

This category is vaguer. It generally covers conduct involving fraud, dishonesty, or intent to harm, and courts have included theft offenses, many assault charges, and fraud crimes. A noncitizen is deportable if convicted of one such crime within five years of admission where the potential sentence is a year or more, or if convicted of two or more such crimes at any time after admission, even if they come from separate incidents.¹³

For a noncitizen facing any criminal charge, a plea that looks favorable in criminal court can be devastating in immigration court. The two systems do not weigh the same conduct the same way.

Address and Registration Duties

Most noncitizens must report any change of address to USCIS within 10 days of moving, using Form AR-11.¹⁴ Diplomats on A or G visas and visa waiver visitors are exempt.

Failing to update an address is a misdemeanor punishable by a fine of up to $200 or up to 30 days in jail. Willfully refusing to register or be fingerprinted carries up to $1,000 in fines or six months in prison.¹⁵ Criminal prosecution for a missed address update is rare, but USCIS can treat the failure as evidence of poor moral character in removal proceedings or naturalization applications, which is often where it does the real damage.

1
Office of the Law Revision Counsel. 8 USC 1325 – Improper Entry by Alien
2
Office of the Law Revision Counsel. 8 USC 1326 – Reentry of Removed Aliens
3
Office of the Law Revision Counsel. 8 USC 1324 – Bringing in and Harboring Certain Aliens
4
Office of the Law Revision Counsel. 18 USC 1546 – Fraud and Misuse of Visas, Permits, and Other Documents
5
Office of the Law Revision Counsel. 8 USC 1325 – Improper Entry by Alien
6
Federal Register. Civil Monetary Penalty Adjustments for Inflation
7
Office of the Law Revision Counsel. 8 USC 1324a – Unlawful Employment of Aliens
8
Social Security Administration. Fraud Prevention and Reporting
9
U.S. Citizenship and Immigration Services. Form I-94, Arrival/Departure Record, Information for Completing USCIS Forms
10
U.S. Citizenship and Immigration Services. Unlawful Presence and Inadmissibility
11
Office of the Law Revision Counsel. 8 USC 1182 – Inadmissible Aliens
12
Office of the Law Revision Counsel. 8 USC 1228 – Expedited Removal of Aliens Convicted of Aggravated Felonies
13
Office of the Law Revision Counsel. 8 USC 1227 – Deportable Aliens
14
U.S. Citizenship and Immigration Services. AR-11, Alien’s Change of Address Card
15
Office of the Law Revision Counsel. 8 USC 1306 – Penalties