At the Border

What Happens in Secondary Inspection at the Border?

By the deGaritas Online editorial team · Updated Friday, October 30, 2026 · 1 min read

In short: Secondary inspection is an additional immigration or customs inspection. It does not mean you did something wrong. It can last from minutes to hours; stay calm, tell the truth and don't use your phone.

Why do they send you to secondary?

The officer at the booth (primary inspection) can send you to an additional inspection for many reasons:

  • Random inspection.
  • Questions about your documents or the purpose of your trip.
  • Need to process an I-94.
  • Products you declared or that were detected in the car.
  • A name match in the system.

What happens inside

You are asked to park your car in a designated area or go into a waiting room. They may search your vehicle, your bags and, in some cases, your phone. An officer will ask you questions about your trip, your job, your home address and your documents.

How to behave

  1. Stay calm and be polite.
  2. Answer truthfully and briefly. If you don't understand, ask them to repeat or request an interpreter.
  3. Do not use your phone in the inspection area.
  4. Do not sign documents you don't understand: ask for an explanation.
  5. Bring proof of your ties to Mexico if you travel often: proof of address, proof of employment or school enrollment.

How long does it take?

It can be anywhere from 15 minutes to several hours, depending on the workload and the reason. There is no fixed time.

What if they don't let me in?

If the officer decides you are not admissible, they may offer to let you withdraw your application for admission or apply other, more serious measures. Read what happens if you are turned back at the border.

Frequently asked questions

Does secondary inspection mean I have a problem?

Not necessarily. Many inspections are random or routine, such as processing an I-94.

Can they search my phone at the border crossing?

CBP has the authority to inspect electronic devices at the border. Cooperate and ask if you have questions.

How long does secondary inspection last?

It can last from 15 minutes to several hours, depending on the reason and the officers' workload.

Check the line before you leave

This guide is for information only and does not replace official information from CBP, the US Department of State, Mexico's National Immigration Institute (INM) or Mexico's customs agency (ANAM). Requirements and fees may change.