USPS finalized a rule requiring states to share voter lists for mail-in ballots, but a federal injunction on Trump's executive order blocks it.
https://www.foxnews.com/politics/usps-publishes-rule-block-mail-in-ballots-states-dont-provide-voter-lists
https://www.foxnews.com/politics/usps-publishes-rule-block-mail-in-ballots-states-dont-provide-voter-lists