At the time of posting these are the current travel requirements for a U.S. Citizen to visit Ghana. These requirements could change quickly so make sure to do your homework and confirm any new requirements.
Passport (6 Month Validity after arrival date and at least 1 blank page)
Tourist Visa not required if staying less than 90 days
No Vaccines Required
Entry Currency Restrictions: No import of Tunisian currency; must declare $10,000 or more (or foreign equivalent) upon entry.
Export Currency Restrictions: Export of Tunisian currency prohibited (can exchange up to TND 5,000 if that amount was declared upon arrival).
U.S. Embassy- Tunis
Les Berges du Lac 1053 Tunis, Tunisia Telephone: +(216) 71-107-000 Emergency After-Hours Telephone: 71-107-000, press 0 and ask for the duty officer Fax: +(216) 71964-360 firstname.lastname@example.org