Vice President Kamala Harris are greeted by Colorado Gov. Jared Polis and Colorado Lt. Gov. Dianne Primavera on arrival in Denver, Tuesday March 16, 2021. (AP Photo/Jacquelyn Martin)

Vice President Kamala Harris and her husband Doug Emhoff arrive at Maria Empanada, Tuesday March 16, 2021, in Denver. (AP Photo/Jacquelyn Martin)

President Joe Biden salutes as he walks off of Marine One and heads towards Air Force One at Andrews Air Force Base, Md., Tuesday, March 16, 2021, to depart for a trip to Pennsylvania. (AP Photo/Susan Walsh)

President Joe Biden speaks with owners Kristin Smith and James Smith as he visits Smith Flooring in Chester, Pa., Tuesday, March 16, 2021. (AP Photo/Carolyn Kaster)

President Joe Biden salutes from the top of the steps of Air Force One at Andrews Air Force Base, Md., Tuesday, March 16, 2021, as he prepares to depart for a trip to Pennsylvania. (AP Photo/Susan Walsh)

President Joe Biden visits Smith Flooring, Inc., in Chester, Pa., Tuesday, March 16, 2021. (AP Photo/Carolyn Kaster)

Vice President Kamala Harris speaks during a business roundtable event at Maria Empanada, Tuesday March 16, 2021, in Denver. (AP Photo/Jacquelyn Martin)