The United States Postal Service (USPS) will be closed on Juneteenth, meaning no mail will be delivered. However, FedEx pickup and delivery services will be available, according to the company's website. FedEx Office locations will also be open. The New York Stock Exchange is closed on Juneteenth.

Parker Banks, 5, proudly holds a Juneteenth flag during Stamford city's Juneteenth celebration at the Stamford Government Center in Stamford, Conn., on Saturday June 17, 2023. Car

President Joe Biden made Juneteenth, which commemorates the emancipation of enslaved people in the U.S., a federal holiday in 2021.

With flags, ceremonies, parades and pomp, celebrations across the United States marked the day the promise of freedom finally rang true for more Americans.

Americans are celebrating Juneteenth, the latest federal holiday in the U.S. that commemorates the end of slavery after the Civil War. CBS News' Shanelle Kaul reports.