…the answer should always be ‘no.’

Many of us have been there. When a police officer asks (or more accurately, declares) to search your car, home, locker, etc., we presume they have the power to do so anyways. We presume that we will be better off cooperating rather than telling the officer ‘no.’ We presume that we will make matters much worse if we say ‘no.’ This could not be further from the truth.

The truth is that if a law enforcement officer has a search warrant, they won’t ask you if they can search – they’ll simply tell you they have a search warrant and go about their business going through yours.

If they believe they have the authority to do a search without a warrant, they won’t ask you either. They’ll simply do it.

However, when they ask you if they can conduct a search, it’s because they can only do so with your consent. No good can come of this. Even if you have nothing to hide, you won’t win any medals by saying ‘yes.’ You’ll simply create a risk that something you were unaware of will be found and you’ll be held responsible. There is no reason to risk even such a remote possibility.

The Fourth Amendment to the United States Constitution grants you the right to be free from unreasonable searches and seizures. Specifically, it states:

The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated, and no Warrants shall issue, but upon probable cause, supported by Oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized.

This essentially means that you have a right not be stopped or searched without a warrant. However, there are important exceptions to this right which allow the government (state or federal) to stop and search you (or your car or house, etc.) without a warrant. They are:

1. Consent – if you consent to a search, regardless of the circumstances, it is lawful. This is why it is so important to say ‘no’ when asked if an officer can conduct a search. Your consent makes an otherwise unlawful search lawful.
2. Search Incident to Arrest – if you are arrested, the police may search your body and clothing and anything within reach at the time you were placed under arrest. Therefore, if you were in your car when placed under arrest – they may search anything within reach in your car. However, if you were placed under arrest outside of your car, then they need a warrant or another exception to search your car.
3. Automobiles – when the police have probable cause to believe that an automobile contains the fruits, instrumentalities or evidence of crime, they may search the vehicle without a warrant. The idea here is that it may take too long to obtain a warrant before the vehicle departs with the evidence.
4. Plain View – if something illegal is within plain view of the officer, they may confiscate it and conduct a search. For instance, if a bag of marijuana is sitting on the passenger seat of a vehicle and is visible and identifiable to an officer performing a traffic stop, the officer may confiscate the bag and perform a search of the car.
5. Booking – police may search the personal effects of a person under lawful arrest as part of the routine administrative procedure at a police stationhouse incident to booking and jailing the suspect.
6. Inventory – very similar to the booking exception except it usually applies to an impounded car. If a vehicle is impounded, it may be searched for safety purposes.
7. Exigency – officers may make a warrantless entry onto private property to fight a fire and investigate its cause, to prevent the imminent destruction of evidence, or to engage in hot pursuit of a fleeing suspect. One such exigency is the need to assist persons who are seriously injured or threatened with such injury.
8. Border Search – officers may conduct a full search of anyone entering the United States from another country or international waters for purposes of national security. This exception has even been employed in cases of oil rig workers returning to shore from the Gulf of Mexico and, in one case, someone flying over international waters from one United States city to another (think Tampa to Houston).

Whether any of these exceptions applies should not matter to you when you’re stopped. That’s the government’s problem. Insist on a warrant. If no warrant is produced, never consent to a search.

Importantly, however, never physically prohibit any law enforcement officer from conducting a search. It may turn out that one of the exceptions applies and if you try to stop them physically, you may be charged with obstruction of justice. If none of the exceptions apply, then the search was unlawful and any evidence seized as a result may be suppressed later on.

In short – if a law enforcement officer asks if they can conduct a search, always say ‘no.’