(iii) Proposed provisions specifying that the USPS shall not transmit mail-in or absentee ballots from any individual unless those individuals have been enrolled on a State-specific list described in subsection (b)(iv) of this section with the USPS pursuant to this subsection.
According to … the constitution
There’s some circular logic happening which Trump sees through. Much like SCOTUS, the constitution can’t enforce itself. So you can just bully it.
There have been cases before where the States threatened to delcare the Constitution null and void due to a pending violation. Contrary to what people think, the States have quite a bit of leeway to deal with things. So far, they have been trying to deal with things legally.