On Friday, election workers in North Carolina are scheduled to start doing something that happens every election cycle without much fanfare: stuffing envelopes with ballots and dropping them in the mail. This year, that routine act is landing in the middle of a legal and technical fight that a federal judge in Boston will spend part of today untangling — one that, according to a Postal Service employee who came forward anonymously, could decide whether millions of mail voters get their ballots at all.

The dispute traces back to an executive order President Trump signed in March, directing federal agencies to build lists of confirmed U.S. citizens and ordering the U.S. Postal Service to stop transmitting mail ballots for anyone not on those lists. To carry that out, USPS has spent months building something called the Federal Ballot Mail Portal — a system where state election officials upload the names and ballot-envelope barcodes of every voter they mail a ballot to, so the Postal Service can check the paperwork against the government's citizen rolls before ballots go out the door.

Fast Facts

  • A federal Postal Service employee is accusing the agency of building a rushed, largely untested system to screen mail ballots — one that could hold up shipments of thousands of ballots over a single scanning error.
  • Hours from now, a judge in Boston hears arguments on whether it can move forward before the midterms.
  • On Friday, election workers in North Carolina are scheduled to start doing something that happens every election cycle without much fanfare: stuffing envelopes with ballots and dropping them in the mail.

Built in weeks, not months

That's the part now under scrutiny. A 20-page disclosure filed with Democratic Sen. Richard Blumenthal of Connecticut, prepared with help from the nonprofit Whistleblower Aid on behalf of an anonymous federal official, describes the portal's development as secretive, rushed, chaotic, and fundamentally flawed. According to the complaint, a project that would typically take nine months to a year to build safely was instead compressed into a matter of weeks so it could hit a September 1 launch target — a timeline the disclosure suggests may have made a serious malfunction less an accident than an inevitability.

The mechanics described in the report are what make this more than a paperwork dispute. USPS reportedly settled on what the whistleblower calls a "zero-percent failure" standard: mail carriers sample around 400 envelopes out of a batch that could hold 10,000 or more ballots, scanning barcodes against the state's uploaded list. If even one of those sampled barcodes doesn't match, the whole batch can be flagged and held back for re-verification — a process the disclosure warns could delay ballots by the thousands while officials sort out what went wrong.

"The main takeaway for me is that the Postal Service has designed a system to disenfranchise millions of Americans."Sen. Richard Blumenthal (D-Conn.), to reporters, via CBS News

A court fight already years — or at least months — in the making

This isn't the first time a judge has weighed in. U.S. District Judge Indira Talwani in Massachusetts issued an order back in June telling USPS to halt work on the system while she considered whether Trump's order was even legal. The whistleblower alleges the agency quietly resumed development in July anyway, without ever explaining what authority let it ignore her ruling. A later court order in August allowed USPS to keep building the portal, so long as it didn't force states to participate — and the Supreme Court, weighing in on a separate procedural question in late August, let a related piece of the order take effect without ruling on whether the underlying policy is lawful, saying only that the states challenging it had sued too early to prove they'd been harmed.

That hasn't ended the fight — it's multiplied it. Twenty-three states and the District of Columbia are now suing to block the rule outright, arguing the Constitution leaves election administration to the states, not the Postal Service. Judge Talwani declined on Monday to lift her temporary restraining order, keeping it in place through today's hearing, where she'll decide whether to convert it into a longer-term injunction that could freeze the system well past the midterms. Whatever she rules, the losing side is expected to appeal to the 1st U.S. Circuit Court of Appeals — and from there, both sides increasingly expect the fight to land back at the Supreme Court, which still hasn't ruled on the merits of any of it.

Two very different stories about the same system

The Trump administration frames all of this in far simpler terms: a Postal Service that already handles bulk mail and barcodes for large customers every day is just being asked to add one more verification step, to keep ballots meant for one voter from reaching someone else. A White House spokesperson said this week that the technical work involved is neither complex nor unusual for the agency, and cast the policy as part of an effort to keep elections secure. It's worth noting that independent research and state audits have repeatedly found that voting by noncitizens in U.S. elections is extremely rare — a point Trump's critics raise often, and one his administration disputes.

House Oversight Committee ranking member Rep. Robert Garcia of California, whose committee has jurisdiction over the Postal Service, called the plan an unconstitutional and dangerous power grab and said Democrats intend to keep pressing USPS for documents on how the portal was built. Sen. Mark Warner of Virginia posted that the whistleblower report confirmed fears that Trump's new policies could keep millions of Americans from receiving their ballots. For its part, USPS has said only that it is carefully reviewing the concerns raised by Blumenthal and the whistleblower, and that the portal is being finalized for election officials who choose to use it voluntarily.

About a third of American voters cast their ballots by mail. Whatever a court ultimately decides about the legality of Trump's order, the practical question hanging over today's hearing is a narrower and more urgent one: with ballots already scheduled to go out this week in North Carolina, and other states' printing and mailing deadlines close behind, is there still enough time to test a brand-new government computer system before it touches millions of people's votes — or has that window already closed.

Reporting and details in this piece draw on NPR, Axios, CBS News, ABC News, Votebeat, and PBS NewsHour.