The key September 2026 change is that the federal government withdrew its Supreme Court emergency application over a new mail-ballot rule. The matter, USPS v.
California, involved the Postal Service and federal government—not Donald Trump personally—and is no longer pending before the Court. The withdrawal leaves a federal judge's preliminary injunction in place against mandatory parts of the rule for the November 3 midterm election. It does not permanently settle the rule's legality or end every related appeal.
Table of Contents
- What changed in September?
- What did the lower court block?
- Why does the injunction matter?
- Did the Supreme Court already uphold Trump's policy?
- What should readers watch next?
What changed in September?
USPS filed an emergency stay application on september 3. A stay would have temporarily lifted a lower-court restriction while litigation continued. The Supreme Court docket records the filing and the government's September 6 withdrawal. The immediate result is straightforward: the Supreme Court will not decide that withdrawn application.
Readers should not treat the withdrawal as a merits ruling approving or rejecting the mail-ballot rule. The dispute may continue through ordinary lower-court appeals or a later Supreme Court filing. But any such development would be separate from application No. 26A297, which the docket lists as withdrawn.
What did the lower court block?
On September 4, U.S. District Judge Indira Talwani issued a preliminary injunction covering the November 3 midterms. A preliminary injunction temporarily prevents specified conduct while a court considers the underlying claims.
The order bars USPS from enforcing the rule's mandatory provisions. Those provisions would have required state or local election officials to obtain USPS approval for ballot-envelope designs and upload each mail voter's information to a USPS portal. The District of Massachusetts order states that USPS cannot implement the mandatory sections for the November 3 election. States may still participate voluntarily, so the injunction blocks compulsory compliance rather than every possible use of the system.
Why does the injunction matter?
The district court found that the challengers were likely to succeed on their claim that USPS lacked authority to impose the rule. That is an early assessment, not a final judgment after the full case. Timing also drove the court's decision.
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Requiring election offices to redesign envelopes, secure approval, and upload voter information close to the election could prevent some mail voters from receiving ballots. For readers, the practical distinction is important: Voters generally do not need to submit information directly to the USPS portal under the blocked mandates. Questions about requesting, receiving, or returning a ballot should go to the relevant state or local election office.
- The mandatory requirements are blocked for the November 3 midterms.
- Voluntary participation remains available.
- The court has not issued a final merits judgment.
- The withdrawn Supreme Court application does not revive the requirements.
Did the Supreme Court already uphold Trump's policy?
No. The Supreme Court's August 24 order in the separate Trump v. California matter did not decide whether the executive order or a resulting final rule was lawful. The Court concluded that the earlier challenge came too soon because USPS had not issued a final rule when the states brought their claims.
The August 24 Supreme Court opinion expressly left open whether later implementation measures would be lawful. That distinction explains why the September litigation matters. The August case concerned a challenge filed before final agency action; the later case addressed the mandatory terms after USPS issued its rule. A procedural victory over a premature lawsuit is not the same as approval of the policy itself.
What should readers watch next?
Watch the lower courts for further action involving the preliminary injunction or the final USPS rule. A new emergency application would require a new filing; the withdrawn application itself cannot produce a September Supreme Court ruling. A separate personal appeal by Trump remains active in Trump v.
Carroll. Trump filed a petition for a writ of certiorari—a request that the Supreme Court review a lower-court decision—on July 28. The Supreme Court docket shows that Carroll's response deadline was extended to October 30. The next documented milestone is therefore Carroll's response or another docket filing, not a September ruling on the merits.
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