Supreme Court backs Trump's order to curb mail ballots.

The U.S. Postal Service published a final rule Friday requiring states to submit eligible voter lists before USPS will deliver mail-in ballots. A federal court injunction currently prevents the rule from taking effect.

• 90 days' notice before an election is required under the rule for states using USPS mail ballots.
• 60 days before an election, states must submit eligible voter lists to USPS.
• North Carolina must send ballots to military and overseas voters by Sept. 4.
• 23 states and Washington, D.C., are plaintiffs in the separate Supreme Court case.

Why it matters: The rule stems from Trump's March 31 executive order directing federal agencies to restrict mail-in ballot delivery. November's midterms, which determine congressional control, are the immediate stakes.

• Millions of voters who rely on mail voting — including those with disabilities and rural voters — could be denied ballots if the rule takes effect, according to the 23-state plaintiffs.
• Judge Talwani previously ruled that two sections of Trump's executive order, including the USPS mail-ballot provision, were unconstitutional.

How 51 sources split on this story

Where they split: The core dispute is whether Trump has authority to impose mail-ballot requirements on states, or whether that power belongs exclusively to states and Congress.

What’s next: Judge Talwani set an 8 a.m. Tuesday deadline for the administration to respond to the emergency motion.

• The rule is scheduled for official publication Wednesday; a new court order could block that.
• The Supreme Court has not yet acted on the administration's request to lift Talwani's injunction.
• Will the Supreme Court lift the injunction before North Carolina's Sept. 4 ballot deadline?
• If the rule takes effect, which states would be unable to comply in time to deliver mail ballots?