A U.S. postal worker delivers packages, boxes and letters Tuesday, Dec. 22, 2020, along her route in the Hyde Park neighborhood of Chicago, just three days before Christmas. The U.S. Postal Service said it faces “unprecedented volume increases and limited employee availability due to the impacts of COVID-19.”

FILE – A U.S. postal worker delivers packages, boxes and letters Tuesday, Dec. 22, 2020, along her route in the Hyde Park neighborhood of Chicago, just three days before Christmas. Some Christmas gift-givers discovered their presents didn’t arrive in time for the holiday despite ordering weeks ahead. The U.S. Postal Service says it faces “unprecedented volume increases and limited employee availability due to the impacts of COVID-19.” (AP Photo/Charles Rex Arbogast)