If you are a legal permanent resident of the US ("greencard holder") and wish to travel to Puerto Rico, you must carry the greencard in order to board the return flight from PR to the mainland US. A passport is not necessary. A greencard is not required to enter PR, but is required to return to the mainland US. Immigration officials check for the greencard before you are allowed on the plane for the return flight. There is no need to carry a passport. Some people suggest that a driver's license is all that you need - not true for permanent residents. Take your greencard!
At least a passport.
Yes.
A Passport.
An identity card is sufficient.
do I need a passport to travel from south wales UK to jersey
Yes, everyone needs a passport to enter the United Kingdom.
Yes you need a passport whenever you leave the United Kingdom because you need it to get back again.
Because the UK government has a policy to not join Schengen.
no, both countries are part of the EU
No, a passport is not required for travel within the United States.
British subjects do not need a passport to enter Ireland if they are arriving directly from the United Kingdom, but you may need your passport for your airline, travel company etc and should check beforehand
United Kingdom Passport Agency