A federal judge blocked the U.S. Postal Service from carrying out President Donald Trump's executive order regarding mail-in ballots. 

The order prohibited the postal service from delivering ballots in states that had not provided a list of mail-in voters, among other requirements, Fox News reported. 

U.S. District Judge Emmet Sullivan ruled Wednesday that the order would violate a settlement agreement in a 2020 lawsuit between the NAACP and the postal service. The agreement allowed the courts to oversee the postal service's actions regarding the monitoring and timely delivery of election mail. 

The ruling comes after an earlier case saw nearly 25 states challenge Trump's order this year.