First lady Jill Biden embraces a person receiving a vaccine speak as she visits the Abyssinian Baptist Church in the Harlem neighborhood of New York, Sunday, June 6, 2021. (AP Photo/Craig Ruttle)

First lady Jill Biden, center left, and Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, visit a vaccine clinic at the Abyssinian Baptist Church in the Harlem neighborhood of New York Sunday, June 6, 2021. (AP Photo/Craig Ruttle)

First lady Jill Biden, center left, and Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, visit a vaccine clinic at the Abyssinian Baptist Church in the Harlem neighborhood of New York Sunday, June 6, 2021. (AP Photo/Craig Ruttle)

An activist holds a surgical mask during a protest of a visit by first lady Jill Biden and Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, at a nearby vaccine clinic at the Abyssinian Baptist Church in the Harlem neighborhood of New York, Sunday, June 6, 2021. (AP Photo/Craig Ruttle)

First lady Jill Biden, left, and Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, visit a vaccine clinic at the Abyssinian Baptist Church in the Harlem neighborhood of New York Sunday, June 6, 2021. (AP Photo/Craig Ruttle)

First lady Jill Biden, center, and Dr. Anthony Fauci, left, director of the National Institute of Allergy and Infectious Diseases, speak to a worker as they visit a vaccine clinic at the Abyssinian Baptist Church in the Harlem neighborhood of New York Sunday, June 6, 2021. (AP Photo/Craig Ruttle)

First lady Jill Biden, center left, standing with Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, makes a statement while visiting a vaccine clinic at the Abyssinian Baptist Church in the Harlem neighborhood of New York Sunday, June 6, 2021. (AP Photo/Craig Ruttle)

First lady Jill Biden, center left, and Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, visit a vaccine clinic at the Abyssinian Baptist Church in the Harlem neighborhood of New York Sunday, June 6, 2021. (AP Photo/Craig Ruttle)

First lady Jill Biden, center left, and Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, speak to a person as they visit a vaccine clinic at the Abyssinian Baptist Church in the Harlem neighborhood of New York Sunday, June 6, 2021. (AP Photo/Craig Ruttle)

First lady Jill Biden, center left, and Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, speak to a person as they visit a vaccine clinic at the Abyssinian Baptist Church in the Harlem neighborhood of New York Sunday, June 6, 2021. (AP Photo/Craig Ruttle)

First lady Jill Biden tours a vaccine clinic at the Abyssinian Baptist Church in the Harlem neighborhood of New York Sunday, June 6, 2021. At left is Sen. Kirsten Gillibrand, D-N.Y. (AP Photo/Craig Ruttle)