DeJoy "never knowingly violated" any campaign contribution laws, his spokesperson said.
Postal executives say the proposed plan is intended to cut costs and modernize the agency’s operations.
President Joe Biden is delivering Democratic oversight to the Trump-appointed Postmaster General, Louis DeJoy.
The move could alter the course of an agency grappling with delivery delays and rumored cuts under its Republican leader.
The agency pretended to release the postmaster general's calendar in a lawsuit looking to get to the bottom of mail slowdowns ahead of the election.
The postmaster general and the U.S. Postal Service argue they can't comply with a judge's order to return 700 high-speed mail processors to service.
The postmaster general also faces a congressional subpoena demanding documents about his meetings.
Postmaster General Louis DeJoy refused to let state officials review notices before they went out, says Colorado Secretary of State Jena Griswold.
DeJoy is alleged to have violated North Carolina and federal campaign finance laws.
Despite congressional subpoenas and Freedom of Information Act requests, the USPS might succeed in keeping the document secret until after the election.