Final answer:
Law enforcement does not routinely ask for a passport during traffic stops, as it is not standard documentation for driving. They will request a driver's license, vehicle registration, and proof of insurance.
Step-by-step explanation:
Law enforcement typically requires drivers to provide certain documents during traffic stops or at checkpoints. These include: a vehicle's registration to verify ownership, proof of insurance to confirm financial responsibility in the event of an accident, and a valid driver's license which serves as identification and proof of a driver's qualifications to operate a vehicle. They would not ordinarily request a passport, as it is not a standard document for driving purposes within the country. A passport is mainly used for international travel. It's worth noting that in some contexts, such as under the controversial Senate Bill 1070, law enforcement in some states may have the ability to question a person's immigration status if there is a 'reasonable suspicion'. However, under standard traffic stop procedures, a passport is not a required document.