Related Clues:
- Border-crossing document
- Pole enters by way of special permit
- Bit of improvisation for getting into the country
- Authorization to enter a country
- Entry requirement, perhaps
- Foreign student's document
- Endorsement made in a passport
- Passport addendum
- Passport attachment
- Type of charge card
- Pilot's airport security requirement (2 words)
- Membership proof (2 words)
- Proof of age (2 words)
- A school may issue one
- Proof you are you (2 words)