Does anyone know if a USA citizen can get a visa to travel to Vietnam?

No

IATA.....

 

Published 21.07.2020
1. Passengers are not allowed to enter Viet Nam.
- This does not apply to passengers on diplomatic or official duty. They will be subject to mandatory medical declaration and quarantine.
- This does not apply to passengers who are experts, business managers or highly skilled workers. They will be subject to mandatory medical declaration and self-isolation.
- This does not apply to passengers approved by National Steering Committee on Covid-19 Prevention and Control.
2. For transportation of nationals of Viet Nam returning to Viet Nam, airlines must contact the Vietnamese Diplomatic Representative agency in the local country in advance.
3. All passengers will be placed on quarantine at a designated facility for 14 days upon arrival.
4. All visa issuances are suspended.
5. All passengers must fill out a quarantine form prior to arrival.
6. Passengers who travel for diplomatic or official purpose will undergo a medical examination at the border.
7. Nationals of Italy and Korea (Rep.) with a normal passport are no longer visa exempt.
8. Nationals of Denmark, Finland, France, Germany, Norway, Spain, Sweden and passengers with a British passport are no longer visa exempt.
9. Passengers with a Certificate of Visa Exemption issued by Viet Nam are no longer visa exempt if they reside in China (People's Rep.), Denmark, Finland, France, Germany, Iran, Italy, Korea (Rep.), Norway, Spain, Sweden or United Kingdom.
10. Nationals of Belarus, Japan and Russian Fed. with a normal passport are no longer visa exempt.
11. Nationals of Belarus, Japan and Russian Fed. with a normal passport and with a Certificate of Visa Exemption issued by Viet Nam are no longer visa exempt.
12. Airline crew are subject to mandatory medical declaration as well as observing self-quarantine during their stay until the next flight schedule.