Jacquelyn Martin, The Associated Press

Vice President Kamala Harris talks to a man as he receives a COVID-19 vaccine at a COVID-19 pop-up center at Ebenezer Baptist Church, Friday, June 18, 2021, in Atlanta.

By Darlene Superville | The Associated Press

PUBLISHED: June 18, 2021 at 8:21 p.m. | UPDATED: June 18, 2021 at 9:26 p.m.

Biden promotes milestone of 300 million vaccine shots in 150 days

As the president marks one milestone, he is in danger of failing to meet another: his target to have 70% of American adults at least partially vaccinated by July Fourth