U.S. Postmaster General Louis DeJoy testifies before the U.S. House Committee on Oversight and Reform on "Protecting the Timely Delivery of Mail, Medicine, and Mail-in Ballots" on Capitol Hill in Washington, D.C., the United States, on Aug. 24, 2020. (Tom Williams/Pool via Xinhua)

U.S. Postmaster General Louis DeJoy testifies before the U.S. House Committee on Oversight and Reform on "Protecting the Timely Delivery of Mail, Medicine, and Mail-in Ballots" on Capitol Hill in Washington, D.C., the United States, on Aug. 24, 2020. (Tom Brenner/Pool via Xinhua)

U.S. Postmaster General Louis DeJoy is sworn in prior to testifying before the U.S. House Committee on Oversight and Reform on "Protecting the Timely Delivery of Mail, Medicine, and Mail-in Ballots" on Capitol Hill in Washington, D.C., the United States, on Aug. 24, 2020. (Tom Brenner/Pool via Xinhua)

U.S. Postmaster General Louis DeJoy (2nd L) arrives to testify before the U.S. House Committee on Oversight and Reform on "Protecting the Timely Delivery of Mail, Medicine, and Mail-in Ballots" on Capitol Hill in Washington, D.C., the United States, on Aug. 24, 2020. (Photo by Ting Shen/Xinhua)

U.S. Postmaster General Louis DeJoy arrives to testify before the U.S. House Committee on Oversight and Reform on "Protecting the Timely Delivery of Mail, Medicine, and Mail-in Ballots" on Capitol Hill in Washington, D.C., the United States, on Aug. 24, 2020. (Photo by Ting Shen/Xinhua)

U.S. Postmaster General Louis DeJoy testifies before the U.S. House Committee on Oversight and Reform on "Protecting the Timely Delivery of Mail, Medicine, and Mail-in Ballots" on Capitol Hill in Washington, D.C., the United States, on Aug. 24, 2020. (Tom Brenner/Pool via Xinhua)