USPS whistleblower says one bad barcode could stop a whole batch of midterm ballots

An unnamed US Postal Service official told Congress that a new mail-ballot screening system could reject entire trays of ballots this autumn. Senator Richard Blumenthal of Connecticut released the disclosure on 1 September and wrote to Postmaster General David Steiner the same day.

The system grows out of a Donald Trump executive order that tells the federal government to build lists of confirmed citizen voters and tells the Postal Service not to move ballots for people who are not on a state list. A rule appeared in the Federal Register late in August. Courts are still hearing challenges to the order. The whistleblower says the agency kept building anyway and aimed to switch the portal on on 1 September.

How the filter is supposed to work

State election offices would upload voter files to a new online portal. Postal workers would then scan barcodes on outgoing ballot envelopes and match them against that file. The disclosure says USPS adopted an internal “zero-percent failure” rule. If one barcode in a sampled batch does not scan or does not match, the whole batch goes back to the election office.

A batch can hold 10,000 ballots, the whistleblower wrote, and in some plants tens of thousands. One mismatch would park the other 9,999 envelopes until the discrepancy is cleared. “As designed, the process is entirely unforgiving,” the disclosure said.

Work on the portal began around 15 June, three and a half months before the planned start and five months before the November midterms. The whistleblower said a project of this size normally takes nine months to a year of testing. Internal staff, according to the report released by Blumenthal’s office, have called the build a mess.

What is still before the courts

Multiple benches are asking whether the executive order can force states to hand voter files to a federal postal database as a condition of ballot delivery. Blumenthal says the agency defied court instructions to pause work. Postal officials did not offer a public comment in the first hours after the letter went out.

The political split is clean. The White House presents the list-and-match rule as a citizenship check. Blumenthal presents the same rule as a design that can stop legal ballots in bulk. The technical claim in the middle is narrower and more useful: a zero-defect scan rule applied to a lightly tested portal, at the start of a midterm mailing season.

What election offices now have to do

If the portal is live, clerks have to keep their uploaded files identical to the names printed on envelopes. A hyphen, a missing apartment number or a scanner that cannot read a crease would, on the whistleblower’s account, be enough to bounce a tray. There is no appeal path described in the disclosure for a voter whose ballot never leaves the plant.

November is ten weeks away. The practical test is whether state officials can get clean files into the portal and whether plant managers will in fact hold a full tray for one bad code. That is an operations question. The legal question is whether USPS has the authority to impose the match as a condition of carriage. Both will be answered in public, one in court and one in the first weeks of ballot printing.