An order from U.S. Postal Service headquarters hasn’t stopped some mail-processing plants in Washington state from hooking up their high-speed letter-sorting machines again. Despite a national order ...

This summer the American Postal Workers Union filed a grievance against the U.S. Postal Service over the agency’s plans to decommission 671 mail-sorting machines at facilities across the country.

Postmaster General Louis DeJoy told a judge the U.S. Postal Service can’t reassemble the hundreds of high-speed mail-sorting machines that were taken apart this year, a project that more than a dozen ...