24, 2020, is testifying Wednesday about poor mail delivery rates.

Postmaster General Louis DeJoy, pictured on Aug.

24, 2020, is testifying Wednesday about poor mail delivery rates.

Postal Service has been beset by continuing delays in delivering the mail.

Peters, who chairs the Senate committee that oversees the Postal Service, was one of more than 30 Democratic senators who wrote to DeJoy last week, asking for an explanation of the poor on-time delivery rates.

Many congressional Democrats, upset with the Postal Service since DeJoy was named postmaster general last year, are calling for his ouster.

It was unclear ahead of the hearing what DeJoy's 10-year plan to reform the Postal Service will look like, but the Washington Post reported it includes slowing the delivery of some local first class mail.

Steidler says it's the poor and the elderly who are hurt most by slower mail deliveries.