The U.S. Postal service will observe a national day of mourning Wednesday in honor of former President George H.W. Bush, according to a news release.

President Donald Trump has proclaimed Wednesday as a national day of mourning throughout the U.S. and has called on the American people to pay homage to the memory of the former president that day. 

The Postal Service will suspend regular mail delivery and retail service Wednesday. USPS will provide limited package delivery service to ensure that the Postal Service network remains fluid and USPS does not experience any impacts to its package delivery operations that might negatively affect customers or business partners during the remainder of the busy holiday season, the release states.

All Postal Service facilities are included in the national day of mourning. Local managers will advise employees on staffing levels to maintain operations and prepare for the resumption of regular activities Thursday. 

Additionally, USPS facilities are required to fly the flag at half-staff through sunset Sunday to honor Bush, who died Friday at age 94.