I am a GreenCard Holder - Do I Need a Visa? Visa requirements vary by country and by citizenship, all US citizens should consult The State Departments Website to check if there are any required visas prior to booking travel. Related articles Can I Cruise With My GreenCard? Does The Cruise Line Hold My Passport While I am Sailing? Visa Requirements Cuba - Cuban Citizens. Can I Get a Refund For One Person Cancelling What Do I Need To Check In At The Pier?