The virus is now ubiquitous and will remain so forever. It isn’t going away. The days of worrying about travelers spreading it are gone. All one can do now if you want to travel outside the US is follow the rules, whether it is vax or testing prior to arrival. Right now you must have a negative Covid test to re-enter the US but that regulation is expected to be lifted in the near future. Brother Raider believes the vax does no good and is dangerous. Check the graphs in the link, especially the US graph. The evidence speaks for itself.

https://ourworldindata.org/covid-deaths-by-vaccination

You can’t fix stupid.