United States Postal Service
The postal service was reportedly going to distribute 560 million reusable face masks across the U.S. before White House officials expressed concern that the move would cause "panic."
At stake is far more than just a few late deliveries – he's using the attack to call for a delay to the election.
"He is WELL AWARE that we do not want him as our president," she wrote.
Trump has essentially admitted he is blocking funding to the US Postal Service in an effort to limit voting by post.
The president has suggested he'll cast doubt on the results of the November election.
United States Postal Service apologises to Rhonda King for canary 'carnage'.