These countries now require Travel Visas
The countries that require a regular visa for U.S. citizens are:
Afghanistan
Algeria
Central African Republic
China
Congo
Cuba
Eritrea
Ghana
Iran
Liberia
Mali
Nauru
Niger
North Korea
Russia
Somalia
Sudan
Turkmenistan
Venezuela
Yemen
https://www.msn.com/en-us/news/world/these-countries-now-require-a-visa-for-americans/ar-AA1IMiBB?ocid=msedgntp&pc=LCTS&cvid=69149256c4a54c5b82e55bfb60153bc1&ei=42