
Customs checks at airports are conducted by Customs and Border Protection (CBP) officers, who determine whether individuals are admissible to enter a country. This involves verifying a traveler's identity, purpose of visit, and right to enter the country. CBP officers may also inspect travelers' belongings for contraband or prohibited items, such as hazardous materials or restricted electronics. The screening procedures are designed to ensure transportation security and are often conducted in collaboration with other law enforcement agencies and intelligence. These checks are mandatory for international travelers and may include questions about the purpose of the trip, duration, and any goods being carried.
| Characteristics | Values |
|---|---|
| Purpose | To determine whether travelers are admissible to the country, and to search for contraband. |
| Who | Customs and Border Protection (CBP) officers, Homeland Security Investigations (HSI) agents, and Transportation Security Administration (TSA) officers. |
| What They Check | Documents (e.g. passport, visa), purpose of the visit, items being carried (e.g. gifts, food, alcohol, electronics). |
| Search Authority | Officers may search people and their belongings, including electronic devices, without individualized suspicion. |
| Search Limitations | Officers may not select individuals for search or secondary inspection based on religion, race, national origin, gender, ethnicity, or political beliefs. |
| Passenger Rights | Passengers have the right to wear religious head coverings and may opt their children out of airport scans. |
| Passenger Responsibilities | Passengers must declare certain items, such as breast milk and formula, and may be fined or have items confiscated if they exceed allowances or bring prohibited items. |
| Expedited Processes | Mobile Passport Control (MPC) and Trusted Traveler Program allow for expedited customs processing at certain airports. |
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What You'll Learn

Customs and immigration checkpoints
Immigration Checkpoints
Immigration officers are responsible for verifying the identity and travel purposes of individuals entering or exiting a country. This typically involves checking passports, visas, and other relevant documentation. Officers may also ask travellers a series of questions, such as the purpose of their trip, the duration of their stay, their occupation, and their intended destinations within the country. Immigration checkpoints aim to determine if an individual has the right to enter or exit a country and if they pose any potential security risks.
Customs Checkpoints
Customs officers focus on inspecting the goods and items that travellers are carrying. This includes declaring any items brought into the country, such as gifts, food, alcohol, tobacco, or other duty-free items. Travellers may be required to pay applicable fees or taxes on these items. Customs officers also ensure that prohibited items, such as certain plants, meats, or hazardous materials, are not brought into the country. They may search travellers' belongings and conduct inspections of electronic devices, although the legal scope of these searches is sometimes contested. Customs checkpoints aim to prevent the illegal entry of goods and ensure compliance with the country's regulations.
The specific procedures and requirements at customs and immigration checkpoints can vary depending on the country and airport. In some cases, travellers may be subject to additional screening, including personal searches or secondary inspections. However, it is important to note that officers are not permitted to select individuals for these searches based on factors such as religion, race, national origin, gender, ethnicity, or political beliefs.
To expedite the customs process, some countries, like the United States, offer programmes such as Mobile Passport Control (MPC). Travellers can use the MPC app to submit their passport information and travel details ahead of time, speeding up their interaction with customs officers upon arrival.
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Declaring items and paying fees
When entering or re-entering the United States, you will likely encounter Customs and Border Protection (CBP) officers. These officers are responsible for determining whether individuals are admissible to the US and may search people's belongings, including electronic devices, for contraband.
If you are carrying merchandise that needs to be declared, you must complete a CBP Declaration Form 6059B itemizing all purchased merchandise and agricultural products. You can complete this form online at a Global Entry kiosk (for pre-approved Global Entry members) or an Automated Passport Control kiosk, or on paper, which you can obtain at the port of entry, on your flight, or on a cruise. It is recommended that you keep all purchase receipts in an envelope in your carry-on bag to facilitate this process.
If you do not declare something that should have been declared, you risk forfeiting the item. It is better to declare an item if you are unsure. The CBP officer will calculate any duties owed on your newly acquired goods. Personal exemptions that do not require the payment of duties vary depending on the countries visited ($200, $800, or $1600). Any articles valued at over $1800, regardless of whether they are for personal use, will be subject to entry and will be classified, appraised, and assessed duty under the specific HTSUS Column 2 rates.
Customs Duty is a tariff or tax imposed on goods when transported across international borders. The Customs Duty Rate is a percentage determined by the total purchased value of the article(s) and not based on factors such as quality, size, or weight. The Harmonized Tariff System (HTS) provides duty rates for virtually every item, and the CBP uses the Harmonized Tariff Schedule of the United States Annotated (HTSUS), a reference manual with applicable tariff rates and statistical categories for all merchandise imported into the US.
You can hire a customs customhouse broker to handle these processes for you, but they are private businesses that charge fees for their services and are not CBP employees.
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Prohibited items and fines
Customs checks at airports are an essential part of ensuring the safety of passengers and preventing prohibited items from entering the aircraft. These checks are conducted by authorities such as the Transportation Security Administration (TSA) in the United States. To facilitate the screening process and enhance your travel experience, it is crucial to be aware of the prohibited items and the potential fines for carrying them.
The list of prohibited items may vary depending on the country and airport, but some common items that are generally not allowed include:
- Weapons and Explosives: Items such as firearms, ammunition, knives, and any other objects that can be used as weapons are strictly prohibited. Carrying these items may result in fines, arrest, or both. Firearms must be transported in checked baggage, unloaded and locked in a hard-sided container, with prior declaration to the airline.
- Hazardous Materials: Most hazardous materials, including flammable liquids, compressed gases, and toxic substances, are forbidden in both carry-on and checked baggage.
- Powder-like Substances: Powders exceeding 12 ounces (350 milliliters) should be placed in checked baggage to avoid secondary screening.
- Food and Agricultural Products: Certain food items, especially restricted fresh fruits, and other plant and animal products may be prohibited or heavily regulated. Fines for carrying restricted fruits can be as high as $500 per piece of fruit.
- Unpowered Electronic Devices: Devices that cannot be powered on, including cell phones, laptops, tablets, and handheld game consoles, will not be permitted onboard the aircraft.
- Liquids, Gels, and Aerosols: These items often have specific restrictions, such as the 3-1-1 liquids rule, and may require additional screening or be prohibited if they cannot be identified.
It is important to note that even if an item is generally permitted, it may still be subject to additional screening or confiscation if it triggers an alarm, appears tampered with, or raises security concerns. The TSA interpretive rule in the Federal Register provides guidance on prohibited items, and civil penalty amounts may vary based on the violation category and aggravating circumstances. Fines can be substantial, reaching up to \$17,062 per violation per person, and repeated violations can lead to further travel complications.
To avoid fines and ensure a smooth travel experience, it is essential to plan and pack properly. Familiarize yourself with the prohibited items list, be mindful of special instructions for certain items, and always allow enough time for the screening process. Remember, drug amnesty bins are available at many airports for the surrender of illegal items without consequence.
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Rights when encountering law enforcement
Customs officers at airports have the authority to ask about your immigration status to determine whether you have the right to enter a country. If you are a US citizen, you only need to answer questions establishing your identity and citizenship. Refusal to answer other questions may cause delays or further inspection, but you cannot be denied entry if you have established your identity and citizenship. If you are a lawful permanent resident, you only have to answer questions establishing your identity and permanent residency. Refusal to answer other questions may cause delays, but officials may not deny you entry for failing to answer. If you are a non-citizen visa holder, you may be denied entry if you refuse to answer officers' questions.
Officers may not select you for a personal search or secondary inspection based on your religion, race, national origin, gender, ethnicity, or political beliefs. Your religious and political beliefs and associations are protected by the First Amendment. Customs officers must not deny you entry to the country for declining to answer questions about these topics. If they persist, you can request to see a supervisor.
You have the right to wear a religious head covering. If an alarm goes off, airport security may request additional screening, including a pat-down of your head covering or asking you to remove it. You have the right to request that this be conducted by a person of your gender and in a private area. If you do not want someone to touch your head covering, you must refuse and say you would prefer to pat down your own head covering.
If you are a non-citizen visa holder selected for further questioning, you may ask to speak to a lawyer. If a customs officer informs you that you are under arrest, or it is clear they suspect you have committed a crime, you have the right to talk to a lawyer before answering any questions.
It is a contested legal issue as to whether you must provide your laptop password or unlock your mobile phone for law enforcement officers. If you are a US citizen, you cannot be denied entry for refusing to produce passwords or unlock devices, but you may be detained, and your device may be seized. If you are a lawful permanent resident, your green card cannot be revoked without a hearing before an immigration judge. If you are not a citizen and are concerned about having your devices searched, you should consult an immigration lawyer before travelling. Non-citizen visa holders and visitors run the risk of being denied entry if they refuse to provide passwords.
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Screening procedures and security
- Passenger Screening: All travellers are subject to screening, which may include passing through metal detectors, advanced imaging technology, or pat-down searches. Passengers with disabilities or special needs may request assistance, and children under 13 are allowed certain exemptions, such as keeping their shoes on during screening.
- Baggage Screening: Carry-on and checked baggage are screened for explosives, dangerous items, and contraband. Passengers may be asked to remove personal electronic devices larger than a cell phone from their bags for separate screening. Powders in carry-on baggage may require secondary screening, and liquids must adhere to specific volume restrictions.
- Unattended Items: TSA encourages the reporting of unattended bags or packages, suspicious items, and individuals attempting to access restricted areas. This is part of their layered approach to security, which also includes collaboration with intelligence and law enforcement agencies to adapt procedures based on evolving threats.
- Customs Checks: Customs officers, such as CBP (Customs and Border Protection) officers in the US, are authorised to stop individuals at the border to determine their admissibility and search their belongings, including electronic devices, for contraband. These checks are conducted to ensure compliance with customs regulations and to protect national security.
- Security Measures: Airports employ various security measures, including CCTV and access control, to monitor checked baggage facilities and secure areas. The implementation of these measures may vary among airports, and some airports may utilise innovative technologies like facial recognition biometrics to enhance security and expedite passenger processing.
- Passenger Rights: Passengers have certain rights during security screening. They can opt their children out of scans, retain their religious headwear, and request assistance for disabilities. Additionally, passengers should be aware of their rights when encountering law enforcement, such as the right to refuse intrusive questions and request to speak to a supervisor if they feel their rights are violated.
By adhering to the screening procedures and security measures, airports strive to ensure the safety and security of all individuals passing through. It is recommended that travellers arrive early at the airport to allow sufficient time for these essential checks.
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Frequently asked questions
Customs checks are checkpoints at airports where international travellers declare the items they are bringing into a country. Customs officers may inspect travellers' bags and ask them to declare items like gifts, food, or alcohol.
Customs officers check whether travellers have the right documents to be in the country, whether they’re legally allowed to be there, and whether they’re bringing anything illegal with them. They may also ask travellers to declare any goods they are bringing into the country and pay any applicable fees.
If you have something to declare, you will need to speak with a customs officer. They will inspect your bags and determine whether you have exceeded any allowances or brought any prohibited items. If so, you may be fined or have items confiscated.











































