No. Passports and drivers licences are not compulsory documents. If you neither drive or travel abroad you do not need them.
No. Passports are for international travel.
Travel documents are passports, identity documents, and VISAS (if necessary).
Yes. That's what passports are for.
Passports are not required for travel inside the US. Anyway, non-citizens, legal or not, are not eligible for US passports.
Only when you are from the US
Only when you want to Travel outside the Country.
to the u.s yes
yes
You need it to identify a person's identity
Sure they can. The US issues at least 3 types of passports. Blue (regular) passports. Red (official business) passports, and Black (diplomatic) passports. DoD civilians often choose to travel overseas on their personal blue passport, because they wouldn't necessarily want folks to know they are a Government Official.
Passports are required for international travel. If you are currently IN Waterford, no passport is necessary to travel there.