WASHINGTON – The Supreme Court said lower courts moved too soon when they partly paused President Donald Trump's executive order cracking down on mail-in ballots before the midterm elections that will decide control of Congress.  

The court on Aug. 24 agreed with Trump that parts of the policy were prematurely put on hold before the administration had finalized rules for how it would be implemented, lifting a lower court ruling that had blocked those provisions from moving forward for now in nearly half the states that challenged them.

But the most important part of the executive order – a new role for the U.S. Postal Service – remains on hold nationwide through a separate lower court ruling in a different case brought by voting rights groups.

And the Supreme Court's decision does not prevent the states from renewing their challenge to the new Postal Service role, now that the agency has finalized implementation rules.   

That means it remains uncertain how much of Trump's executive order will move forward in time for the rapidly approaching midterm elections.

In a divided opinion, the court said its decision "does not mean that any measure taken by the Government to implement the Order will necessarily be lawful."

"On that score, time will tell," the majority wrote in the unsigned opinion.

The court's three liberal justices dissented.

Justice Ketanji Brown Jackson said the decision "lets another shoe drop in the Kafkaesque nightmare that our precedents have been steadily creating for certain plaintiffs who seek to bring election-related challenges."

"To be sure, the Court has not foreclosed States from challenging this blatantly unconstitutional Order," Jackson wrote in her dissent. "But it declines to explain when, exactly, is the right time to bring a meritorious election-rule claim challenging unconstitutional interference with electoral processes."

More: USPS seeks mail-in voter lists from states after Trump order

The first Pony Express carrying mail from St Joseph, Missouri to California in 1860. Founded in 1775 by Benjamin Franklin, the Postal Service evolved from Pony Express riders to modern Segways connecting the nation, but continues to have financial problems and rising costs. (Keystone, Getty Images)
The first Pony Express carrying mail from St Joseph, Missouri to California in 1860. Founded in 1775 by Benjamin Franklin, the Postal Service evolved from Pony Express riders to modern Segways connecting the nation, but continues to have financial problems and rising costs. (Keystone, Getty Images)
A postman wearing snow shoes in the Rocky Mountains circa 1870. (Hulton Archive, Getty Images)
A postman wearing snow shoes in the Rocky Mountains circa 1870. (Hulton Archive, Getty Images)
Horse-drawn mail wagons circa 1909. (Topical Press Agency, Getty Images)
Horse-drawn mail wagons circa 1909. (Topical Press Agency, Getty Images)
The new auto truck put into service by the United States Mail for the delivery of Parcel Post circa 1910. (Paul Thompson, Getty Images)
The new auto truck put into service by the United States Mail for the delivery of Parcel Post circa 1910. (Paul Thompson, Getty Images)
Around 1911, the Flying Merkel—a bright orange, American-built motorcycle produced by the Miami Cycle & Manufacturing Co.—was briefly pressed into service by the U.S. Post Office Department as officials experimented with faster mail delivery methods. Period photographs show Postal Service carriers using belt‑driven, V‑twin Flying Merkels for urban and rural routes, especially when roads were too rough or distances too long for horses and bicycles. The bikes’ speed, durability, and ability to carry mail bags made them well‑suited to early 20th‑century delivery trials, helping demonstrate the practicality of motorcycles for government service and paving the way for wider mechanized mail transport in the years that followed. (Library of Congress)
Around 1911, the Flying Merkel—a bright orange, American-built motorcycle produced by the Miami Cycle & Manufacturing Co.—was briefly pressed into service by the U.S. Post Office Department as officials experimented with faster mail delivery methods. Period photographs show Postal Service carriers using belt‑driven, V‑twin Flying Merkels for urban and rural routes, especially when roads were too rough or distances too long for horses and bicycles. The bikes’ speed, durability, and ability to carry mail bags made them well‑suited to early 20th‑century delivery trials, helping demonstrate the practicality of motorcycles for government service and paving the way for wider mechanized mail transport in the years that followed. (Library of Congress)
A postman delivers the mail on a rural route in York County, Maine on Aug. 26, 1930. (National Archives, Getty Images)
A postman delivers the mail on a rural route in York County, Maine on Aug. 26, 1930. (National Archives, Getty Images)
Postman Arthur LeBlanc from Berlin, New Hampshire, delivering post from his horse-drawn sled circa 1950. (Orlando, Getty Images)
Postman Arthur LeBlanc from Berlin, New Hampshire, delivering post from his horse-drawn sled circa 1950. (Orlando, Getty Images)
A group of New York postmen set off on foot from the General Post Office to deliver mail in New York City at Christmas around 1955. (Vecchio, Getty Images)
A group of New York postmen set off on foot from the General Post Office to deliver mail in New York City at Christmas around 1955. (Vecchio, Getty Images)
Postman delivering letters by mule circa 1955. (Evans, Getty Images)
Postman delivering letters by mule circa 1955. (Evans, Getty Images)
A postman standing by a two wheeled mail cart whilst delivering mail in Detroit, Mich. circa 1955. (Three Lions, Getty Images)
A postman standing by a two wheeled mail cart whilst delivering mail in Detroit, Mich. circa 1955. (Three Lions, Getty Images)
Gwin Pardin, a mail carrier out of the Belle Meade Post Office, stuffs a mailbox as part of her duties on Jan. 15, 1980. Pardin hopes her driving a mail route is a first step up the ladder to becoming postmistress in a rural Tennessee town one day. (Robert Johnson, The Tennessean via USA TODAY Network)
Gwin Pardin, a mail carrier out of the Belle Meade Post Office, stuffs a mailbox as part of her duties on Jan. 15, 1980. Pardin hopes her driving a mail route is a first step up the ladder to becoming postmistress in a rural Tennessee town one day. (Robert Johnson, The Tennessean via USA TODAY Network)
Moore City postman Dennis Albert walks the streets of Moore City, Okla. delivering the mail on May 9, 1999. Primary services are being reestablished in the tornado-ravaged area. Official sources indicated that 41 people died and more than 500 people were injured in what was classified as an F5 tornado, the most severe type of twister, with winds of more than 250 miles per hour. (HECTOR MATA, AFP via Getty Images)
Moore City postman Dennis Albert walks the streets of Moore City, Okla. delivering the mail on May 9, 1999. Primary services are being reestablished in the tornado-ravaged area. Official sources indicated that 41 people died and more than 500 people were injured in what was classified as an F5 tornado, the most severe type of twister, with winds of more than 250 miles per hour. (HECTOR MATA, AFP via Getty Images)
Postal letter carrier K. Ng rides a Segway Human Transporter on his postal route July 15, 2002 in San Francisco, Calif. The U.S. Postal service is testing out the Segway on routes in San Francisco. (Justin Sullivan, Getty Images)
Postal letter carrier K. Ng rides a Segway Human Transporter on his postal route July 15, 2002 in San Francisco, Calif. The U.S. Postal service is testing out the Segway on routes in San Francisco. (Justin Sullivan, Getty Images)
Postal Service carrier Ron Comly carries parcel packages to a home while delivering mail along his postal route Dec. 17, 2003 in Philadelphia, Pa. December 17 is expected to be the busiest delivery day for the U.S. Postal Service. (William Thomas Cain, Getty Images)
Postal Service carrier Ron Comly carries parcel packages to a home while delivering mail along his postal route Dec. 17, 2003 in Philadelphia, Pa. December 17 is expected to be the busiest delivery day for the U.S. Postal Service. (William Thomas Cain, Getty Images)
A mailman walks down the wintry street the morning after a snowstorm March 1, 2005 in Brooklyn, New York. New York received seven inches of snow while parts of New England received over a foot. (Spencer Platt, Getty Images)
A mailman walks down the wintry street the morning after a snowstorm March 1, 2005 in Brooklyn, New York. New York received seven inches of snow while parts of New England received over a foot. (Spencer Platt, Getty Images)
A Postal Carrier drives her delivery truck taking US Mail to residential boxes Aug. 5, 2009 in Centreville, Virginia. The US Postal Service has announced closings of over 600 post offices across the US stating they are losing money. (PAUL J. RICHARDS, AFP via Getty Images)
A Postal Carrier drives her delivery truck taking US Mail to residential boxes Aug. 5, 2009 in Centreville, Virginia. The US Postal Service has announced closings of over 600 post offices across the US stating they are losing money. (PAUL J. RICHARDS, AFP via Getty Images)
US Postal Service letter carrier Dennis Stecz carries a load of mail as he walks his delivery route Jan.28, 2009 in San Lorenzo, California. The US Postal Service asked the US Congress for permission to discontinue mail delivery one additional day a week in an effort to make up financial losses. The Postal Service is forecasting a loss of $9 billion in 2009. (Justin Sullivan, Getty Images)
US Postal Service letter carrier Dennis Stecz carries a load of mail as he walks his delivery route Jan.28, 2009 in San Lorenzo, California. The US Postal Service asked the US Congress for permission to discontinue mail delivery one additional day a week in an effort to make up financial losses. The Postal Service is forecasting a loss of $9 billion in 2009. (Justin Sullivan, Getty Images)
A mail delivery person pulls her cart through the snow on Jan. 4, 2018 in Brooklyn, New York during a giant winter "bomb cyclone”. (ANGELA WEISS, AFP via Getty Images)
A mail delivery person pulls her cart through the snow on Jan. 4, 2018 in Brooklyn, New York during a giant winter "bomb cyclone”. (ANGELA WEISS, AFP via Getty Images)
A mail carrier loads a postal truck with packages at a United States Postal Service (USPS) post office location in Washington, DC, April 16, 2020. For many Americans, checking the mailbox is a daily ritual, a constant in a quickly changing world that can yield anything from wedding invitations to tax audits to new clothes. But as with many ordinary things as the coronavirus crisis unfolds, the US Postal Service -- already compromised by a mountain of debt -- has a most uncertain future. (SAUL LOEB, AFP via Getty Images)
A mail carrier loads a postal truck with packages at a United States Postal Service (USPS) post office location in Washington, DC, April 16, 2020. For many Americans, checking the mailbox is a daily ritual, a constant in a quickly changing world that can yield anything from wedding invitations to tax audits to new clothes. But as with many ordinary things as the coronavirus crisis unfolds, the US Postal Service -- already compromised by a mountain of debt -- has a most uncertain future. (SAUL LOEB, AFP via Getty Images)
Mail carrier Oscar Osorio continues to deliver mail in Los Feliz amid the Covid 19 pandemic on April 29, 2020, in Los Angeles, Calif. Everyday the United States Postal Service (USPS) employees work and deliver essential mail to customers. (VALERIE MACON, AFP via Getty Images)
Mail carrier Oscar Osorio continues to deliver mail in Los Feliz amid the Covid 19 pandemic on April 29, 2020, in Los Angeles, Calif. Everyday the United States Postal Service (USPS) employees work and deliver essential mail to customers. (VALERIE MACON, AFP via Getty Images)
Michael Miller has been delivering the same rural USPS mail route in Gallia County, for the past 30 years, Tuesday, August 11, 2020. Some of his route consists of dirt and gravel roads for over a mile jut to deliver to two houses. Mail carriers are in many ways a lifeline to their rural communities. They don't just deliver letters and magazines, but also lifesaving medicines and packages from Amazon and FedEx that wouldn't otherwise make it. (Courtney Hergesheimer, Columbus Dispatch via USA TODAY NETWORK)
Michael Miller has been delivering the same rural USPS mail route in Gallia County, for the past 30 years, Tuesday, August 11, 2020. Some of his route consists of dirt and gravel roads for over a mile jut to deliver to two houses. Mail carriers are in many ways a lifeline to their rural communities. They don't just deliver letters and magazines, but also lifesaving medicines and packages from Amazon and FedEx that wouldn't otherwise make it. (Courtney Hergesheimer, Columbus Dispatch via USA TODAY NETWORK)
A United States Postal Service (USPS) worker wearing a protective mask and gloves makes his rounds in the Chelsea neighborhood of Manhattan as the city continues Phase 4 of re-opening following restrictions imposed to slow the spread of coronavirus on Aug. 20, 2020 in New York City. The fourth phase allows outdoor arts and entertainment, sporting events without fans and media production. (Dia Dipasupil, Getty Images)
A United States Postal Service (USPS) worker wearing a protective mask and gloves makes his rounds in the Chelsea neighborhood of Manhattan as the city continues Phase 4 of re-opening following restrictions imposed to slow the spread of coronavirus on Aug. 20, 2020 in New York City. The fourth phase allows outdoor arts and entertainment, sporting events without fans and media production. (Dia Dipasupil, Getty Images)
Postal Service letter carrier Dawnya Allred delivers mail-in ballots in a residential neighborhood on Oct. 8, 2020 in Phoenix, Ariz. Postal authorities are expecting a record number of mail-in ballots this year due to the coronavirus pandemic. (John Moore, Getty Images)
Postal Service letter carrier Dawnya Allred delivers mail-in ballots in a residential neighborhood on Oct. 8, 2020 in Phoenix, Ariz. Postal authorities are expecting a record number of mail-in ballots this year due to the coronavirus pandemic. (John Moore, Getty Images)
Postal workers prepare mail for delivery at the Kilbourn Park post office on May 9, 2020 in Chicago, Ill. Unique Clay, a 31-year-old letter carrier who worked at the Kilbourn Park post office, died of complications from COVID-19 on May 5, a week after giving birth to her third child. She was the first letter carrier in the city to die from the virus, more than 30 have tested positive. (Scott Olson, Getty Images)
Postal workers prepare mail for delivery at the Kilbourn Park post office on May 9, 2020 in Chicago, Ill. Unique Clay, a 31-year-old letter carrier who worked at the Kilbourn Park post office, died of complications from COVID-19 on May 5, a week after giving birth to her third child. She was the first letter carrier in the city to die from the virus, more than 30 have tested positive. (Scott Olson, Getty Images)
Letter Carrier Connie Cruz delivers mail on Oct. 8, 2020 in Salem, Ore. Mail carriers throughout Oregon are preparing for millions of mail-in ballots as the general election nears. (Nathan Howard, Getty Images)
Letter Carrier Connie Cruz delivers mail on Oct. 8, 2020 in Salem, Ore. Mail carriers throughout Oregon are preparing for millions of mail-in ballots as the general election nears. (Nathan Howard, Getty Images)
Michael Miller has been delivering the same rural USPS mail route in Gallia County, for the past 30 years, Tuesday, August 11, 2020. Some of his route consists of dirt and gravel roads for over a mile jut to deliver to two houses. Mail carriers are in many ways a lifeline to their rural communities. They don't just deliver letters and magazines, but also lifesaving medicines and packages from Amazon and FedEx that wouldn't otherwise make it. (Courtney Hergesheimer, Columbus Dispatch via USA TODAY NETWORK)
Michael Miller has been delivering the same rural USPS mail route in Gallia County, for the past 30 years, Tuesday, August 11, 2020. Some of his route consists of dirt and gravel roads for over a mile jut to deliver to two houses. Mail carriers are in many ways a lifeline to their rural communities. They don't just deliver letters and magazines, but also lifesaving medicines and packages from Amazon and FedEx that wouldn't otherwise make it. (Courtney Hergesheimer, Columbus Dispatch via USA TODAY NETWORK)
Meghan Mooradian dressed her dog Cisco as a mailman during the Chamber of CommerceÕs Trick or Treat night on Thursday, Oct. 28, 2021 in Randolph, Ma. (David Sokol, Wicked Local Staff Photo via USA TODAY NETWORK)
Meghan Mooradian dressed her dog Cisco as a mailman during the Chamber of CommerceÕs Trick or Treat night on Thursday, Oct. 28, 2021 in Randolph, Ma. (David Sokol, Wicked Local Staff Photo via USA TODAY NETWORK)
Post Master Tim Mulligan pushes a cart of mail through the snow to a letter carriers truck in Westwood, NJ. on Tuesday, Feb. 2, 2021. (Tariq Zehawi, NorthJersey.com via USA TODAY Network)
Post Master Tim Mulligan pushes a cart of mail through the snow to a letter carriers truck in Westwood, NJ. on Tuesday, Feb. 2, 2021. (Tariq Zehawi, NorthJersey.com via USA TODAY Network)
Mailman Reid Cole delivers mail by boat on the Magnolia River in Magnolia Springs, Ala. on Wednesday, July 20, 2022. (John Blackie, News-Journal via USA TODAY NETWORK)
Mailman Reid Cole delivers mail by boat on the Magnolia River in Magnolia Springs, Ala. on Wednesday, July 20, 2022. (John Blackie, News-Journal via USA TODAY NETWORK)
Mail delivery workers unload a truck on Flatbush Avenue on July 22, 2022 in the Flatbush neighborhood of the Brooklyn borough in New York City. A heat advisory is in effect in the city and is expected to last through the weekend, with Sunday expected to see a high of 98 degrees, which could break NYCÕs record of 97 that was set in Central Park in 2010. (Michael M. Santiago, Getty Images)
Mail delivery workers unload a truck on Flatbush Avenue on July 22, 2022 in the Flatbush neighborhood of the Brooklyn borough in New York City. A heat advisory is in effect in the city and is expected to last through the weekend, with Sunday expected to see a high of 98 degrees, which could break NYCÕs record of 97 that was set in Central Park in 2010. (Michael M. Santiago, Getty Images)
A postal worker delivers mail in Manhattan on Sept. 5, 2025 in New York City. (Spencer Platt, Getty Images)
A postal worker delivers mail in Manhattan on Sept. 5, 2025 in New York City. (Spencer Platt, Getty Images)
Postal carrier Marc Jacques delivers the mail in a neighborhood on March 19, 2026 in Miami, Fla. The head of the US Postal Service has warned lawmakers that it may run out of money in less than a year unless Congress allows it to borrow more money and charge more for postage. (Joe Raedle, Getty Images)
Postal carrier Marc Jacques delivers the mail in a neighborhood on March 19, 2026 in Miami, Fla. The head of the US Postal Service has warned lawmakers that it may run out of money in less than a year unless Congress allows it to borrow more money and charge more for postage. (Joe Raedle, Getty Images)

The first Pony Express carrying mail from St Joseph, Missouri to California in 1860. Founded in 1775 by Benjamin Franklin, the Postal Service evolved from Pony Express riders to modern Segways connecting the nation, but continues to have financial problems and rising costs.

The order Trump signed in March directs agencies to compile a list of confirmed U.S. citizens eligible to vote in each state and to use federal data to help state election officials verify which voters are eligible.

The Postal Service would then oversee mail-in voting, establishing "uniform standards" for the ballots and requiring states to provide lists of verified voters.

In June, a federal judge in Boston said parts of the order are unconstitutional. U.S. District Judge Indira Talwani ruled that those components can't be enforced this year in the 23 states, plus the District of Columbia, that sued over the order while the legal fight continues.

The administration argued the states' lawsuit was premature because the executive order had not been fully implemented.

When an appeals court disagreed, the administration asked the Supreme Court to intervene.

As that request was pending, Talwani blocked the Postal Service from carrying out Trump's directive in any state in response to a separate legal challenge brought by voting rights groups. And the Postal Service finalized its proposal for implementing the order.

More: Ahead of midterms, Trump wants Supreme Court help on mail-in ballots

The Justice Department described the final rules as "modest requirements for preparation and envelope design" for mailed ballots that are well within the Postal Service's traditional scope of setting mailing standards "for particularly sensitive types of mail."

States do not have use the U.S. mail to conduct their elections, the Postal Service said. But for the states that do, the agency said it can take steps to "improve operational efficiency and support the faithful execution of federal law."

A dozen Republican-led states backed the administration in a separate filing asking the Supreme Court to restore Trump's full executive order.

The blue and swing states challenging the order said allowing the changes to take effect before the midterms could result in millions of people being denied the right to vote because of the "high risk for errors and the limited window for correcting mistakes."

Voting rights groups have said the administration wants to "weaponize" the Postal Service to force states to violate voters' privacy by getting access to the sensitive personal information that is in voter files.

The fight over what rules govern absentee ballots could be crucial for the 2026 midterms, which will determine which party controls Congress. Democrats can take control by flipping a handful of seats in the House and Senate.

Voting by mail has decreased since its peak during the COVID-19 pandemic. But nearly 30% of voters still cast a ballot that way in the 2024 elections.

Democrats are more likely than Republicans to vote by mail, according to the MIT Election Data & Science Lab.

Under the Constitution, states are assigned the role of administering federal elections. But Trump has called for greater federal control of the process since losing his 2020 reelection campaign. He's continued to falsely say he lost due to widespread voter fraud and has continued to vote by mail himself.

More: Trump's effort to get state voter rolls hits a brick wall in courts

In July, the Boston-based 1st U.S. Circuit Court of Appeals said Trump's executive order is already straining states, which must prepare on a tight calendar for the changes. The appeals court also said the order "would sow confusion and threaten disenfranchisement of many eligible voters" if allowed to go into effect for the November elections.

In addition to his March executive order, Trump has proposed legislation to require voters to provide identification at polling places and proof of citizenship when registering as part of a broader bill, but it has stalled in Congress.

And judges have blocked another executive order that would have required potential voters to present documentation proving their citizenship in order to register to vote.

This article originally appeared on USA TODAY: Supreme Court gives Trump win in mail ballot dispute, but fight continues