US Immigration from Jamaica

To anyone if I'm flying from Jamaica to the STATES will I be required to show the airline a negative Covid-19 test or do I have to take it before I buy my plane ticket. Any advice on flying to the STATES

How long it takes to hear from the embassy office once they have your passport and police certificate. How long you have to travel before it expires.

Good day everyone, I recently done my interview and was approved. However I received a 221g form because my medical appointment was after the interview. How long after the medical is done and the passport return to the embassy, will it take to receive the K1 visa or to see any updates?

To anyone just WANNA know how long it takes to hear from the embassy office once they takes your passport and police certificate. and how soon they send you the information by DHL Service.

Good afternoon everyone. So a few weeks ago (9/22/20)I told you guys that a letter was returned by the postal service to uscis because they stated that my address was not upto date. Well,I updated it that night. Requested it be returned and as of today no mail. It will not allow me to request it again because I have already requested it. What can I do now? Does it really take more than a month to get mail returned to

you?