I Am a US Citizen - Do I Need a Visa? 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. Related articles Do I Need A Passport? I am an International Guest - Do I Need a Visa? Visa Requirements - Costa sailings to Madagascar Departure Port Address & Transfer Information - Miami Do I Need A Passport If I Am An International Guest?