The USPS released a statement in response to the letter: “We are ready to deliver ... residents to use local drop boxes instead of entrusting them with the postal service.

WATCH: Election official explains concerns over USPS ... Postal Service and state election officials are urging anyone voting by mail to return their ballots well before Election Day or to use ...

Instead, it demonstrates a pervasive lack of understanding and enforcement of USPS ... mail. The letter comes less than two weeks after DeJoy said in an interview that the Postal Service was ready ...

"If the nation's election officials felt these issues had been properly addressed with USPS staff ... voting by mail to return their ballots well before Election Day or to use drop boxes where ...

On Wednesday, officials sent a letter to Postmaster General Louis DeJoy detailing problems within the USPS that could cause problems in the election.