As former President George H.W. Bush is laid to rest Wednesday, the majority of mail services will stop for the day.

The United States Postal Service (USPS) has suspended its delivery services including regular mail, retail services, and administrative office activity in honor of the National Day of Mourning, according to the federal agency.

An executive order was signed by President Trump on Saturday, following Bush’s death. This order directed all federal agencies and departments to close out of respect for the 41st president.

“Out of respect for the 41st President of the United States and to honor his vast contributions to our country during his lifetime, and consistent with the Presidential Proclamation, the United States Postal Service will suspend regular mail deliveries, retail services and administrative office activity on Dec. 5,” the federal agency said.

“We will provide limited package delivery service on that day to ensure that our network remains fluid and we do not experience any impacts to our package delivery operations that might negatively affect our customers or business partners during the remainder of our busy holiday season.”

USPS mail services will resume on Thursday.

USPS Stops Mail United States Postal Service has stopped mail service on Wednesday to honor the death of former President George H.W. Bush. Letters wait to be sorted at the Main Post Office on December 19, 2011 in Chicago, Illinois. U.S. Postal Service officials believe that Monday will be the busiest mailing day of the holidays with more than 1.7 million cards mailed in Chicago alone. Photo: Getty Images/Brian Kersey