HELENA, Mont. (AP) — The U.S. Postal Service agreed Wednesday to reverse changes that slowed mail service nationwide, settling a lawsuit filed by Montana Gov. Steve Bullock during a pandemic that is expected to force many more people to vote by mail.

The lawsuit filed against Postmaster General Louis DeJoy and the U.S. Postal Service on Sept. 9 argued changes implemented in June harmed access to mail services in Montana, resulting in delayed delivery of medical prescriptions, payments, and job applications, and impeding the ability of Montana residents to vote by mail.

The postal service agree...