Yes. Even infants need it in order to travel especially international travel.
Yes
No. but to travel out or into the country they do.
Hawaii is a US state - if you don't need a passport to go to Nevada or Michigan, you don't need a passport to go to Hawaii.
It depends on which part of Ireland. South: Yes. North: No.
There is no better form of identification for your child than a kids passport. These passports will allow you to leave the country and will be accepted everywhere as a form of identification. The child passport is only valid for 5 years when compared with an adult passport that is valid for 10 years. Even if you do not plan on leaving the country, it is wise to have a passport for your child. This way, you will have the option to leave the country if your travel plans change for any reason. If you have the kids passport in advance, you will not have to wait for it to be ordered from the authorities. Be certain to make a photocopy of the passport in case it becomes lost while traveling.
You need a passport
You need a passport to get a visa
Yes, you do need your passport.
If you need a passport there, the baby will also need a passport. Maybe there is the possibility to get your baby written into your passport.
you can be any age
No, you do not need a passport inside the US but you will need a valid picture ID.
You Don't. You need to have a passport in order to have a passport number.
If you leave your country of residency, you need a passport - everywhere.