In a letter dated July 12, 2019, the Postal Service issued its national craft determination for the USS or Universal Sorting System. The USS is currently in 8 postal facilities, with the Postal Service planning to add 15 more locations in the next year.

The Postal Service has determined that "the primary craft operation of the USS is the Mail Handler Craft." The actual number of employees required to perform the duties associated with the USS at any time will be determined based on local configuration and operational needs.

Read President Hogrogian's Memorandum to Local Presidents and the USPS National Craft Determination (pdf)