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Obtaining a US visa involves meeting several requirements before the consular interview, and one of the most important is the appointment at the Applicant Service Center (CAS). Although this procedure is usually fast, showing up without the necessary documents or carrying prohibited items can lead to delays and even the rescheduling of your appointment. Knowing what you must present and which items are not allowed will help you complete this process without setbacks.
¿Qué es el CAS y por qué es importante?
The CAS, or Applicant Service Center, is a facility where US visa applicants register their biometric data before the interview at the consulate or embassy.
In these centers, fingerprinting, digital photography, and verification of the information contained in the DS-160 form take place. Unlike consulates, no interview related to the approval or denial of the visa is conducted at the CAS.
It is important to remember that CAS locations are usually near consulates but in separate buildings, so it is recommended to verify the exact address before attending the appointment.
¿Qué documentos son obligatorios para acudir al CAS en 2026?
Although the process is simple, applicants must present themselves with the essential documentation to complete the biometric registration.
The mandatory documents are:
Valid Mexican passport for travel to the United States.
DS-160 form confirmation page.
Printed appointment confirmation page.
Without these documents, the center's staff will not be able to proceed with the process, and the applicant might have to reschedule their appointment.
¿Qué sucede durante la cita en el CAS?
The visit to the Applicant Service Center generally lasts a few minutes.
Once you arrive at the location, the procedure usually unfolds as follows:
You present your passport and the confirmation of the DS-160 form.
Staff verifies the documentation.
You are assigned to a service window.
A digital photograph is taken that will appear on your visa if approved.
Your fingerprints are recorded using an electronic scanner.
Information in your file is validated.
If there is any issue with the documents or recorded data, the applicant is sent to a specialized area to correct the situation before proceeding.
Objetos prohibidos en el CAS
For security reasons, there are items that cannot be brought into the CAS facilities.
Among the main restricted items are:
- Dispositivos USB.
- Encendedores.
- Objetos que puedan ser utilizados como armas.
- Teléfonos celulares encendidos.
Although cell phones may be allowed in some cases, they must remain turned off during your stay in the facilities. Additionally, upon entry, a security officer will check each visitor's belongings.
To expedite access, it is recommended to bring only the necessary documentation and avoid carrying backpacks or items that are not essential.
¿A qué hora debes llegar?
Authorities recommend arriving approximately 15 minutes before the scheduled time.
Arriving early allows you to pass security screenings, locate the correct line, and avoid problems derived from traffic or unexpected delays.
The US Consulate reported that it is no longer possible to schedule the biometric appointment at the CAS and the consular interview for the same day. Currently, applicants must visit the CAS at least 48 hours before their appointment at the consulate.
People who had both appointments scheduled for the same date will receive a notification with a new date to attend the CAS. If they do not receive the corresponding notice, they should contact the service center for information on their file.
¿Qué pasa después de acudir al CAS?
Once the biometric registration is complete, the next step is to attend the consular interview at the US embassy or consulate.
During that interview, the application will be analyzed, and it will be determined whether the visa is approved or not. If the result is favorable, the passport with the stamped visa will be sent via courier service or can be picked up later at the point indicated by consular authorities.
Delivery time usually varies between two weeks and two months, depending on the workload and the characteristics of each process.
To avoid setbacks in the US visa process during 2026, verify in advance that you have your valid passport, the confirmation of the DS-160 form, and your appointment sheet. Also, try to bring only the essentials and respect the restrictions on prohibited items inside the CAS. Proper preparation can make this step of the process fast, simple, and free of unnecessary delays.
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