Yes, you need a passport. You don't need a visa to travel to Belize for up to 30 days, but you must have a return ticket and proof of sufficient funds to support yourself during your stay.
yes, anywhere out of the US you need one.
Yes.
yes
yes you need a passport to travel everywhere!
yes
Yes. You need a passport to fly anywhere.
Yes you need a valid passport to fly from Glasgow to Spain.
Yes, you need a passport.
You need a passport or an ID.
yes of course you need a passport to fly to las Vegas you need a passport to fly anywhere! No you don't if you live in the United States you don't need a passport to fly to Las Vegas.
No, for domestic flights, you will need a form of photographic ID, not necessarily a passport.
Chicago, no Shaker Heights, yes
No, you do not need a passport to fly within the United States of America. If you are going out of the country, you will need to get one.
Yes you do. If you leave out of state you need a passport