The wrong government! Voter rolls etc. are state responsibilities, not a federal ones.
And please, don't spend a second entertaining any crocodile-tears and pearl-clutching from Republicans about how "maybe states don't have rights and need consistent standards" all of a sudden. Nobody with any good-intentions for reform would wait until right before a major election to do something crazy that could disenfranchise millions.
Ex: "Stop being so mean to Bob, he just wanted to help out with platform stability when he stole that SSH key to push an un-reviewed hotfix to prod while betting the company stock would crash on a gambling site."
And no, the USPS is not in the Constitution. Article I Section 8 gives Congress the power "To establish Post Offices and post Roads". They executed that power via legislation. The USPS didn't come into being until 1970, replacing the United States Post Office Department, a branch of the cabinet. The legislation creating the USPS says that it "shall not make any undue or unreasonable discrimination among users of the mails" -- what Trump has tasked it to do is in direct violation of that law.
Oh yeah that'll stop them.
This system would catch it 98,3% of the time. Pretty good, I'd say.
It gets sent back, it gets investigated and fixed, and back it goes.
Am I missing something?
IF this cycle of delays lasts long enough, then some people never receive a mail-in ballot, or receive it too late