Driving: license rules differ by state
There is no single US rule. Each state decides if a visitor may drive with a foreign license and for how long. This differs by state; see In your state below.
An International Driving Permit (IDP) is a translation of the home license. It is not a license on its own. Always carry it with the real license.
An IDP must be bought in the home country before the trip. The US does not issue IDPs to visitors. Websites selling an "international license" online are often scams.
Some states expect an IDP, some do not. Check the DMV (driver's license office) website of each state they will drive in.
Insurance and renting a car
If a parent drives your car, call your insurer first. Ask to add them as a named driver (a person listed on the policy). Some insurers want every regular driver listed.
Renting: rental companies set their own rules. You may need the license, an IDP, a passport and a credit card in the driver's name. Some have age limits or extra fees for added drivers. Ask before booking.
If they are not used to US roads, start on quiet streets. Teach right turn on red, stop signs and school buses.
Airport help for older parents
Wheelchair help from the airline is free. Under federal rules, airlines must give free help to passengers with a disability or trouble walking, between the entrance, gates, connections and the plane.
Ask for wheelchair help when you book, or call the airline as early as you can.
Ask for it on every flight in the trip, including connections and the return.
At the airport, tell the check-in desk and the gate staff again.
If something goes wrong, ask for the CRO (Complaints Resolution Official). Airlines must have one.
What to say on the phone: "My mother is 74. She can walk a little but not long distances. Please add wheelchair assistance to the gate and from the plane at arrival, for every flight."
TSA runs security screening at US airports. TSA Cares helps travelers with disabilities or medical conditions at the checkpoint.
Call 855-787-2227 or use the online form at tsa.gov at least 72 hours before the flight.
It covers screening only. For help to and from the gate, use the airline.
For international arrivals, you usually wait outside the customs exit in the arrivals hall. Wheelchair staff often bring them through.
Give your parents your phone number on paper. Agree on a meeting point.
Leaving from a US airport, some airlines can give you a pass to walk a parent to the gate. Ask at the check-in desk.
Asking for wheelchair help on the first flight only.
Not telling the rental company or insurer who will drive.