U.S. lawful permanent residents will continue to be able to use their Alien Registration Card issued by the Department of Homeland Security along with a valid passport from the country of citizenship for entry to the United States. 

You may like to check https://visacentral.com/ and https://www.visahq.com/ for visa requirements or see your Embassy or Consulate.

Domestic Cruises that do not include travel to Cuba

The Western Hemisphere Travel Initiative (WHTI) when fully implemented on June 1, 2009, will require all travelers to and from Canada, Mexico, the Caribbean, and Bermuda to present a valid passport or other approved document that establishes the bearer's identity and citizenship in order to enter

Depending on your itinerary, the ship may collect your passport to speed up the clearance formalities at each port of call.

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. 

Visa requirements vary by country and by citizenship, all US citizens should consult the state department's website to check if there are any required visas prior to booking travel. 

It is the responsibility of the guest to identify, obtain and present necessary visas before the start of their cruise vacation. Requirements vary based on the guest’s nationality and countries visiting during the cruise.