On Thursday, USPS said it had delivered more than 100 million blank or completed ballots since early September.
The Trump campaign had challenged an apparent loophole in the law.
The 2.75 euro "corona stamp" comes in sheets 10 cm wide, or a tenth of the 1 meter that the government advises members of the public to keep apart from each other.
A Kentucky postal employee was fired after investigators said that more than 100 mail-in ballots were dumped. Collection boxes were ransacked outside of six Virginia post offices.
The problem is the almost total lack of supervision over these companies, which do more or less as they please, frequently leaving us as customers totally helpless when problems emerge.
Ricin is found naturally in castor beans but it takes a deliberate act to convert it into a biological weapon.
"The states have demonstrated that the defendants are involved in a politically motivated attack on the efficiency of the postal service."
“If DeJoy thinks he can just throw a bed sheet over what’s going on behind these doors, he is sadly mistaken. It looked like the post master had something to hide.”
The Trump campaign has also taken legal action to block mail-in voting procedures in Nevada and New Jersey. Election experts have said there is scant evidence of fraudulent postal voting in the past.