Postmaster General Louis DeJoy pledged Thursday that the US Postal Service will undertake “heroic efforts” to deliver all mail-in ballots on time this year and urged people to put their ballots in the mail at least one week before Election Day on November 5.

U.S. Postmaster General Louis DeJoy expressed frustration Thursday to reporters about the ongoing criticism from election officials about how the agency handles mail-in ballots, saying it is wrong to suggest they could be displaced.

Postmaster General Louis DeJoy said some changes in how mail is processed are being paused to ensure they don’t interfere with performance during the election.

The U.S. Postal Service’s leader is expressing frustration with ongoing criticism of how it handles mail ballots

Election officials across the country, including Virginia, have raised concerns with the U.S. Postal Service about the timely delivery of mail-in ballots ahead of the November election.