A United States Postal Service (USPS) mailbox is seen in Manhattan, New York City, U.S., May 9, 2022. REUTERS/Andrew Kelly

The United States Postal Service requested $2 billion from Congress on Tuesday to cover unfunded mandates and avoid retail cuts. The funding appeal follows a net loss of $6.5 billion for the 12 months ending September 30. Lawmakers face mounting pressure to stabilize the agency's broken operating model.