the Biden administration may be shifting its stance on requiring vaccinations for airline passenger as more officials speak out in favor of that policy [SFGate]

In SF Gate today, " The U.S. is working on ways to reopen this country to foreign visitors who are currently banned — like those from the U.K., E.U. and some other nations — and the White House's Zients told the U.S. Travel and Tourism Advisory Board this week, "We are exploring considering vaccination requirements for foreign nationals traveling to the United States." " SFGate https://www.sfgate.com/travel/article/Routes-United-SFO-Paris-Netherland-Chile-UK-Brazil-16467600.php