Less than a month remains until the Fourth of July, which was President Biden's goal for 70% of American adults to have gotten at least one dose of a COVID-19 vaccine.
It looks like it's going to be a stretch to get there.
As of Tuesday, nearly 64% of U.S. adults have had at least one shot, according to data from the Centers for Disease Control and Prevention.
The key issue is that demand has dropped off. After an initial crush, the number of doses being administered daily is on a steep decline from the early April peak.
So what's going on? A few things to note:
But it's not just about politics: