Immigration/Passport check while leaving US

Last year, there was news circulating that the US may start having immigration checks for non-US citizens/residents leaving the US. However, a friend told me that the CBP still has no exit control policy. A friend of mine also informed me that he didn't have to go through immigration while leaving the US this summer.
I'll be travelling from Chicago to Abu Dhabi to Lahore in a few months. I'm not a US citizen/resident. When I leave the US, will I have to go through immigration? Will my passport me scanned on the machine, or would they simply look at the information on my documents?
Best Answer
No, you will not have to physically go through immigration when you travel in a few months.
However, your passport details will be passed from the airline to the CBP. This information is kept in the I-94 database, and you can look up your own travel history at https://i94.cbp.dhs.gov.
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Do they check passports when leaving the US?
As there is no specific CBP interview or check by any customs officers as part of the exit process, no one will put an US Exit stamp on your passport. Your passport will only have the entry stamp from Port of Entry, that's about it.How does immigration know you left the country?
It's important to remember to hand in your paper I-94 when leaving the United States, since that's how the U.S. government will track your departure and know that you left the country before your visa expired. You'll use information from your I-94 travel record for many immigration purposes.Do they check your visa at the airport?
The officer at primary inspection will verify your identity and check your name against various computer databases. The officers are on the lookout for people who might be a security risk or who are using a tourist or other nonimmigrant visa to gain entry to the United States for illegal purposes or a permanent stay.How do I check my US travel history US entry and exit?
To view your U.S. travel history, go to the CBP website and click on the \u201cView Travel History\u201d tab. In the next window, you will be required to read and accept terms of the website by clicking "Consent & Continue". You will need to provide: First (Given) Name \u2013 as it appears on the passport/visa.How forged passports are caught in UAE
More answers regarding immigration/Passport check while leaving US
Answer 2
The US has immigration controls on all international departures.
However these immigration controls are normally only carried our electronically. When you check-in for your flight (which for an international flight must be done at least 60 minutes before departure), the airline passes your details - including passport details - to US Department of Homeland Security (DHS), who then share it will other groups such as US Customs and Border Patrol (CBP).
In most cases, DHS will notify the airline that they are OK to issue a boarding pass, however if for some reason they determine the passenger is not able to depart the country they can electronically block the issuing of a boarding pass, and force the airline or the passenger to contact DHS/CBP first.
Alternatively, CBP/DHS/TSA staff have the ability to carry out physical checks whilst passengers are boarding a flight, which is normally done on the jet-bridge to the plane (at a point where the passengers are normally not aware that these checks are occurring until they are already on the jet bridge and committed to boarding the flight).
In all cases, once the flight departs from the US, the airlines once again notify DHS which passengers departed on the flight (not including any that did not board, etc), at which point the various government departments are able to update records related to when the person departed the US.
So no you will not need to pass through physical immigration controls as you're probably used to in most countries around the world. Your passport will still be scanned, only by the airline at check-in rather than immigration officials. You ID will still be checked, once by TSA when passing through security, and a second time whilst boarding your flight.
Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.
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