Basically both are a proof of your citizenship but if you are not a citizen, you will not be able to have both document. What you need to be a citizen is proof that you are either born here or a naturalized citizen.
It is advisable to have a passport but a citizen of Mexico or the USA can do this with a drivers license.
no because you need important documents to prove that you are a US citizen
No. NTSA guidelines require a passport (foreign or US), US passport card, green card or US drivers license or non-drivers license.
If you are not a US citizen, I'd advise taking your passport.
No, picture ID such as a drivers license would be sufficient if you are a UK CITIZEN.
No, you cannot get a drivers license in Canada if you are a US citizen.
Yes. If you are a foreign citizen renting a car, all you need is your passport (and a credit card or cash, of course).
Yes
No. NTSA guidelines require a passport (foreign or US), US passport card, or US drivers license or non-drivers license.
No, you can't
Yes, but you must have an international drivers license or drivers license paired with passport and major credit card.
just a citizen of u.s.a