I don't have a subscription and was able to click through? Odd.
Anyway, as infections begin to increase in the US again, the writer writes the following:
Every infected person, anywhere in the world, offers the coronavirus another opportunity to morph into a new variant. The more infections there are globally, the more likely new variants will arise.
The United States will be vulnerable to every one of them until it can immunize millions of people who now refuse to get the vaccine, are still persuadable but hesitant, or have not yet gained access. The unvaccinated will set the country on fire over and over again.