Yes You Do
No you do not need a passport to travel from the us to puerto rico. you do need a visa.
Yes, you do not need a passport to travel to the US Virgin Islands if you are a US citizen.
Yes, you need a valid passport to travel from the US to the Cayman Islands.
No. but to travel out or into the country they do.
Only in the US and it's territories.
If you are a US citizen, you will need both a valid US passport and an Australian ETA visa to travel to Australia.
You'll need a US PASSPORT to return to the US.
Yes, a passport is required to travel outside the United States.
Yes, a US passport holder needs a visa to travel to Australia.
Yes, you must sign your US passport before using it for travel.
If you are coming from abroad then yes, you still need your passport. The passport is a very important travel document which you should always carry when you travel in and out of the US.
No if she has a passport she could travel anywhere without a USA passport