There are at least 5 rapid antigen test solutions that are proctored and accepted for travel back into the USA. The links below will take you to 2 different articles that will cover these solutions and most likely answer all of your questions. If there is more that you need to know, please just ask. The first article is from 6 Dec 21 and the 2nd article is from 14 Jan 22. There is some overlap in information.
