South Africa
Effective December 24, 2015, personal appearance by the application is now required. The applicant has to appear in person at the nearest embassy or consulate, third party submission is no longer an option.
There is no visa required for U.S. citizens traveling for tourist purposes for a maximum stay of 90 days. A valid U.S. Passport (must be valid for 6 months beyond the date of entry) is required.