[UPDATE] 3-0 First Circuit keeps Trump mail-ballot rule blocked as 7 Republican officials oppose pre-November start

The Postal Service's August rule implemented Trump's March order. It required states to use USPS-approved ballot and envelope designs and upload voter information to a postal portal, with delivery conditioned on compliance. The appeals panel said the administration had not shown that Congress authorized USPS to regulate federal elections; it left Judge Indira Talwani's injunction in place while litigation continues. Background on the requirements.