
Customs and immigration are checkpoints that international travelers must pass through before exiting the airport. Immigration checks your passport and your right to enter a country, while customs checks the items you're carrying to ensure they're legal and within limits. Customs officers may stop people at the border to determine whether they are admissible to the country, and they may search people's belongings for contraband. TSA PreCheck® and Global Entry are both programs that provide expedited security screening benefits for flights departing from U.S. airports.
| Characteristics | Values |
|---|---|
| Who you'll encounter at customs | Customs and Border Protection (CBP) officers, Homeland Security Investigations (HSI) agents, Immigration officers |
| What they'll ask | Why you're travelling, how long you'll stay, what you do for a living, what cities you'll visit, what you're bringing with you |
| What they'll check | Your passport, your right to enter the country, your belongings for contraband |
| What you can bring | Most goods for personal use in small quantities won't incur fees. Check with the country's customs rules for prohibited items. |
| What you can wear | You have the right to wear your religious head covering. |
| What you can film | Filming is allowed as long as the screening process is not interfered with and no sensitive information is revealed. |
| What you can opt out of | You may opt your children out of an airport scan, but they may still be subject to a pat-down search. |
| What you can expedite | TSA PreCheck and Global Entry programs can expedite security and customs screening. |
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What You'll Learn
- Customs and immigration are mandatory checkpoints for international travellers
- Customs checks if your documents, belongings, and entry purpose are valid
- Immigration officers may ask questions about your trip and search your luggage
- TSA officers conduct security screenings and searches but cannot arrest you
- You can opt your children out of airport scans but not pat-down searches

Customs and immigration are mandatory checkpoints for international travellers
You will go through customs and immigration both when arriving in a foreign country and when returning to your home country. In some cases, you may go through customs and immigration before boarding your flight. For example, when flying from Ireland to the United States, you will go through US customs in Ireland. However, when arriving in the US from most other countries, you will go through customs upon your first arrival in the US. Sometimes, you won't go through customs until you reach your final destination. For instance, if you are flying from the US to Europe and have a layover in one Schengen Area country before arriving in another, you will typically go through immigration at the airport when you first land, but you won't go through customs until you reach your final destination.
At customs, you may be asked if you have anything to declare. Customs duties apply to certain items like alcohol, tobacco, and gifts. Some goods, like meat, produce, and certain plants, are prohibited from entering countries like the US without proper approval. Anything you bought, inherited, or received as a gift while travelling may need to be declared at customs. Failing to declare prohibited items could result in fines or penalties, especially for high-value goods.
At airports, Transportation Security Administration (TSA) officers conduct security screenings of passengers, baggage, and cargo. TSA screeners can search you and your baggage, and they have the authority to conduct further searches even if the initial screening reveals nothing suspicious. However, they cannot arrest you. Other law enforcement officers, such as airport police, are also present at airports. Customs and Border Protection (CBP) officers are usually encountered at the border, and they may search people's belongings for contraband, including electronic devices, though this is a contested legal issue.
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Customs checks if your documents, belongings, and entry purpose are valid
Customs checks are an essential part of the airport security process, ensuring that travellers' documents, belongings, and entry purposes are valid and compliant with the country's regulations. Here are some key points regarding customs checks:
Document Checks:
Customs officers typically review passports or other travel documents to verify a traveller's identity and right to enter a country. This process may include checking visas, residency permits, or other relevant paperwork. Some countries offer expedited customs processing programmes, such as Global Entry in the United States, for travellers seeking quicker entry upon arrival.
Belongings Inspection:
Customs officials inspect travellers' belongings to ensure they are legal and within permissible limits. This includes checking for prohibited items such as contraband, illegal substances, or restricted goods like meat, produce, or certain plants. Travellers may be required to declare certain items, especially high-value goods, to avoid fines or penalties. Customs duties and taxes may apply to specific items like alcohol or tobacco.
Entry Purpose Inquiry:
Customs officers may ask questions to ascertain the purpose of a traveller's visit, including inquiries about the nature of the trip (business or pleasure), intended duration of stay, and planned activities or destinations within the country. These questions help assess if the traveller's entry purpose aligns with the applicable visa or entry requirements.
Search Authority:
Customs officers have the authority to search travellers' persons and belongings, including electronic devices like laptops and cell phones. However, they are not permitted to select individuals for search or secondary inspection based on factors such as religion, race, national origin, gender, ethnicity, or political beliefs.
Timing of Customs Checks:
The timing of customs checks can vary depending on the country and specific agreements in place. Typically, travellers go through customs after arriving in a new country, but there are exceptions. For instance, travellers flying from certain countries to the United States may clear US customs before departure, expediting their entry upon arrival.
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Immigration officers may ask questions about your trip and search your luggage
When you arrive at your destination airport, you will likely encounter Customs and Border Protection (CBP) officers. They will inspect your passport and ask you questions to determine whether you have the right to enter the country. Immigration officers may ask you about the purpose of your trip, how long you will be staying, what you do for a living, and which cities you will be visiting. They may also ask you to declare any goods you are carrying that are subject to customs duties, such as alcohol, tobacco, gifts, meat, produce, or certain plants.
In some cases, immigration officers may also search your luggage and electronic devices for contraband. This is done to ensure that you are not carrying any prohibited or restricted items, such as firearms, specific fruits and vegetables, animal products, or cultural artifacts. Luggage checks are often random, but they can also be targeted if there is a suspicion of illegal activity. It's important to cooperate with the officers and answer their questions truthfully to avoid any delays or issues with your entry into the country.
If you are a non-citizen visa holder, you have the right to decline to answer questions about your religious beliefs and political opinions. However, doing so may lead to further questioning or even denial of entry into the country. Additionally, while officers cannot select you for a personal search based on your religion, race, national origin, gender, ethnicity, or political beliefs, they do have the authority to search your electronic devices. This is a contested legal issue, and you may refuse to provide your password or unlock your device, but this may result in delays or further inspection.
If you are an immigrant entering the country for the first time with a green card, you will automatically undergo a secondary inspection. This is a routine procedure where an officer will review your file and conduct a more thorough interview and inspection. It is meant to ensure that you have provided accurate information and documentation and is not something to be worried about. Overall, it's important to be prepared for potential questions and luggage searches when passing through immigration and customs at the airport. Knowing your rights and being cooperative will help facilitate a smoother entry process.
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TSA officers conduct security screenings and searches but cannot arrest you
When travelling through an airport, you will encounter Transportation Security Administration (TSA) officers who are responsible for conducting security screenings and searches. These screenings aim to prevent weapons, explosives, or other threatening items from entering secured areas and airplanes. TSA officers are authorised to search passengers, their baggage, and cargo. They may also conduct pat-down searches and request the removal of light outerwear or bulky clothing for a more thorough inspection. Additionally, passengers may be asked to remove electronic devices larger than a cell phone from their carry-on bags for separate X-ray screening.
While TSA officers have the authority to conduct searches, they are not commissioned law enforcement officers and cannot make arrests. Their role is limited to security screenings and ensuring the safety of passengers and employees. If a TSA officer suspects criminal behaviour, they will notify law enforcement officers present at the airport, who will then take the necessary action. It is important to comply with the instructions of TSA officers during security screenings to avoid any legal consequences.
Passengers have certain rights during security screenings. They can opt their children out of airport scans, although pat-down searches may still be required. Passengers wearing religious head coverings have the right to retain them and can request a private area for removal if necessary. Additionally, parents travelling with infants are permitted to bring breast milk and formula in quantities exceeding three ounces, subject to inspection.
It is important to note that TSA officers are prohibited from selecting individuals for personal searches or secondary inspections based on factors such as religion, race, national origin, gender, ethnicity, or political beliefs. Any form of interference or threat towards TSA officers during their duties is strictly prohibited and may result in civil penalties or criminal charges. Passengers should follow instructions and remain cooperative during security screenings to ensure a smooth process.
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You can opt your children out of airport scans but not pat-down searches
In most cases, you'll go through airport customs and immigration after your flight first arrives in a new country. However, there are exceptions. For instance, some countries have mutual agreements to speed travelers through the process, so you may go through customs and immigration before boarding. When flying from Ireland to the US, for example, you'll go through US customs in Ireland.
Customs and immigration are checkpoints that international travelers must pass through before leaving the airport. Immigration checks your passport and your right to enter a country, while customs checks the items you're carrying to ensure they're legal and within limits. Customs checks also apply to certain items like alcohol, tobacco, and gifts. Some goods like meat, produce, and certain plants are prohibited from entering countries like the US without proper approval. Anything you bought, inherited, or received as a gift while traveling may need to be declared at customs. Failing to declare prohibited items could result in fines or penalties, especially for high-value goods.
At airports, Transportation Security Administration (TSA) officers conduct security screenings. Most TSA officers are not law enforcement officers, and their role is to screen passengers, baggage, and cargo. TSA screeners can search you and your baggage at checkpoints, but they cannot arrest you. TSA officials may also test liquids like breast milk and formula for explosives and may ask you to open the containers during the screening process.
While you may opt your children out of an airport scan, there is no exemption for children from the pat-down search. Children under 13 years old may leave their shoes, light jackets, and headwear on during screening. Generally, a passenger cannot opt out of a pat-down search, and refusal to undergo the pat-down may result in being thrown out of the airport. During a TSA pat-down search procedure, a transportation security officer (TSO) of the same gender as the passenger will use their hands to feel for items that may be hidden on an individual's body or underneath their clothes. It is important to note that the Federal Aviation Administration (FAA) does not allow race or national origin to be used when selecting who undergoes further screening.
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Frequently asked questions
Immigration is about the people traveling from one country to another and their right to enter a country. Customs is about the items those people are carrying with them and whether they are legal and within limits.
Customs officers may stop people at the border to determine whether they are admissible to the country, and they may search people's belongings for contraband. Customs duties apply to certain items like alcohol, tobacco, and gifts. Some goods like meat, produce, and certain plants are prohibited from entering countries like the US without proper approval.
You may be asked whether your trip is for business or pleasure, how long you'll be in the country, what you do for a living, and what cities you'll be visiting during your stay. You may also be asked how long you spent in the country and what you're bringing back with you.




















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