It’s a no brainier - just show proof before you fly that you are fully vaccinated and you’ll be allowed into the USA. It can’t be difficult for the US Government to work with the airlines to get this set up.

✉️ [From Reader: Hamish H]
In order to allow us to travel more easily just do what New York City is doing, Show that you are vaccinated. Simple, just show proof before you fly that you are fully vaccinated and you'll be allowed into the USA, it's a no brainier. How difficult must it be to set up a system to check your vaccination status. It can't be difficult for the US Government to work with the airlines to get this set up.