The Supreme Court on Monday rejected President Donald Trump's bid to restrict mail ballots for the midterm elections, capping a flurry of last-minute legal action with voting already underway.

The decision allows states to continue sending out mail ballots under the same processes they've used for years and have accounted for nearly a third of votes cast.

It represented a stark defeat for Trump on an issue he consistently has emphasized as vital to ensuring election integrity even though there is virtually no evidence of fraud with mail ballots.

The Supreme Court majority wrote that the administration's push to implement the restrictions this year is likely to lose in court, though the brief emergency order didn't detail its reasoning. Two justices, Samuel Alito and Clarence Thomas, publicly dissented.

The Trump administration had asked the justices, once again at the center of a roiling political controversy, to clear the way for restrictions before the pivotal November contests for control of Congress.

Alito wrote in his dissent that the Postal Service "has broad authority to regulate the mail" and likely does have the power to enforce Trump's restrictions.

Justice Brett Kavanaugh, meanwhile, agreed that the restrictions should not go into effect for the midterms but indicated he might rule in favor of the Trump administration if the issue comes back before the court at a later time.

Mail ballots are already being sent to voters

Election officials have said there was simply no way to carry out a complete overhaul in the weeks before the midterms. Indeed, Alabama, North Carolina and Wisconsin began sending mail ballots to voters over the past week while the new system was still not active.

The Trump administration plan would require states to adopt a uniform envelope style and submit lists of eligible voters to an online portal. The Postal Service could refuse to deliver ballots to states that didn't comply.

The administration's efforts had the potential to be especially disruptive in states that send out ballots entirely by mail. Washington's Secretary of State Steve Hobbs, a Democrat, said the decision means work "to carry out a safe, secure, and accurate election" can continue "without having to upend our election processes to meet unrealistic ballot mail requirements."

In Arizona, another largely vote-by-mail state, Democratic Secretary of State Adrian Fontes said "it is crucial for us to continue rejecting the notion that access and security are mutually exclusive when it comes to running strong elections."

Utah Lt. Gov. Deidre Henderson, a Republican serving as the state's chief election officer, said on social media that the Supreme Court's decision means "Utahns can have confidence that the 2026 election will proceed as normal."

The White House and Justice Department did not immediately respond to requests for comment, but have in the past framed the restrictions as commonsense changes aimed at keeping elections secure.

State officials and voting rights groups pushed back

Democratic state officials and voting rights groups challenged the restrictions in court, arguing that the president has no constitutional authority to set election rules that would "virtually eliminate mail voting on the eve of a major election."

A whistleblower report, meanwhile, said the postal system's requirements could lead to millions of mail ballots never being sent, because problems with the not-yet-operational portal meant a single bar code error could result in an entire batch of ballots being tossed out.

A federal judge on Thursday ruled that the Defense Department is violating his earlier order to restore access to the Pentagon for reporters, a setback in the administration's efforts to impede the work of journalists.

U.S. District Judge Paul Friedman sided with The New York Times for the second time in a month. He had earlier said the Pentagon's new credential policy violated journalists' constitutional rights to free speech and due process. On Thursday, he said Defense Secretary Pete Hegseth's team had tried to evade his March 20 ruling by putting in new rules that expel all reporters from the building unless guided by escorts.

"The department simply cannot reinstate an unlawful policy under the guise of taking 'new' action and expect the court to look the other way," Friedman wrote. Friedman had ordered Pentagon officials to reinstate the press credentials of seven Times reporters and stressed that his decision applies to "all regulated parties." The Pentagon building serves as the headquarters for U.S. military operations.

Defense Department spokesperson Sean Parnell said it disagrees with the ruling and intends to appeal. Parnell said in a social media post that the department has "at all times" complied with judge's orders, reinstating journalists' credentials and issuing "a materially revised policy that addressed every concern" identified by the judge.

"The Department remains committed to press access at the Pentagon while fulfilling its statutory obligation to ensure the safe and secure operation of the Pentagon Reservation," he wrote.

Times attorney Theodore Boutrous said Thursday's ruling "powerfully vindicates both the Court's authority and the First Amendment's protections of independent journalism."

In October, reporters from mainstream news outlets walked out of the building rather than agree to the new rules. The Times sued the Pentagon and Hegseth in December to challenge the policy.

President Donald Trump has fought against the press on several levels since returning to his second term, suing The Times and Wall Street Journal, and cutting funding for public radio and television because he did not like their coverage. At the same time, he frequently talks to the media and responds to reporters who call him on his cell phone.

In a series of briefings on the Iran War, Hegseth has frequently ignored or insulted legacy media reporters let in to cover the events, while concentrating on questions from friendly conservative media.

Times attorneys accused the Pentagon of violating the judge's March 20 order, "both in letter and spirit" with its revised policy. The newspaper said that Pentagon was also trying to impose unprecedented rules dictating when reporters can offer anonymity to sources.

Friedman said that the access the Pentagon made available to permit holders "is not even close to as meaningful as the broad access" they previously had.

Government lawyers said the Pentagon's revised policy fully complies with the judge's directives. Pentagon spokesperson Sean Parnell has said the administration would appeal Friedman's March 20 decision.

The Pentagon Press Association, which includes Associated Press reporters, said the Pentagon's interim policy preserves provisions that Friedman deemed to be unconstitutional while also adding new restrictions on credential holders.

"In effect," Justice Department attorneys wrote, "Plaintiffs ask this Court to expand the Order to prohibit the Department from ever addressing the security of the Pentagon through a press credentialing policy with conditions that may address similar topics or concerns as the enjoined conditions. The Order does not say that, and this Court should not read it to say that."

The Supreme Court's conservative majority on Monday sounded skeptical of state laws that allow the counting of late-arriving mail ballots, a persistent target of President Donald Trump.

A ruling, likely to come by late June, that bars counting ballots arriving after Election Day would send officials scrambling in 14 states and the District of Columbia, just a few months before the 2026 midterm congressional elections to change their ballot rules.

An additional 15 states that have more forgiving deadlines for ballots from military and overseas voters also could be affected.

The legal challenge is part of Trump's broader attack on most mail balloting, which he has said breeds fraud despite strong evidence to the contrary and years of experience in numerous states. Trump has repeatedly claimed that his loss to Joe Biden in 2020 resulted from fraud even though more than 60 court decisions and his own attorney general said that argument had no merit.

While there was no explicit reference to the 2020 election, several conservative justices gave voice to some of Trump's complaints. Justice Samuel Alito wondered about the appearance of fraud in situations where "a big stash of ballots" that arrive late "radically flipped" an election.

Defending the state law, Mississippi Solicitor General Scott Stewart pointed out that the Trump administration and its allies in the case have yet to submit a single case of fraud due to late-arriving mail ballots.

The court's liberal justices indicated they would uphold state laws with post-Election Day deadlines. "The people who should decide this issue are not the courts, but Congress, the states and Congress," Justice Sonia Sotomayor said.

Forcing states to change their practices just a few months before the election risks "confusion and disenfranchisement," especially in places that have had relaxed deadlines for years, state and big-city election officials told the court in a written filing.

California, Texas, New York and Illinois are among the states with post-Election Day deadlines. Alaska, with its vast distances and often unpredictable weather, also counts late-arriving ballots.

Alaska elections officials said Monday they are preparing for the fall elections under existing law. "If a ruling requires operational changes, we will work through those in coordination with the appropriate state entities to ensure compliance and to provide clear information to voters," the Alaska Division of Elections said in a statement.

Lawyers for the Republican and Libertarian parties, as well as Trump's administration, are asking the justices to affirm an appellate ruling that struck down a Mississippi law allowing ballots to be counted if they arrive within five business days of the election and are postmarked by Election Day.

China’s military on Monday dispatched air, navy and missile units to conduct joint live-fire drills around the island of Taiwan, which Beijing called a “stern warning” against separatist and “external interference” forces. Taiwan said it was placing its forces on alert and called the Chinese government “the biggest destroyer of peace.”

Taiwan’s aviation authority said more than 100,000 international air travelers would be affected by flight cancellations or diversions.

The drills came after Beijing expressed anger at what could be the largest-ever U.S. arms sale to the self-ruled territory and at a statement by Japan’s prime minister, Sanae Takaichi, saying its military could get involved if China were to take action against Taiwan. China says Taiwan must come under its rule.

The Chinese military did not mention the United States and Japan in its statement on Monday, but Beijing’s foreign ministry accused the Taiwanese ruling party of trying to seek independence through requesting U.S. support.

Taiwan’s Defense Ministry said rapid response exercises were underway, with forces on high alert. “The Chinese Communist Party’s targeted military exercises further confirm its nature as an aggressor and the biggest destroyer of peace,” it said.

Beijing sends warplanes and navy vessels toward the island on a near-daily basis, and in recent years it has stepped up the scope and scale of these exercises.

Senior Col. Shi Yi, spokesperson of China’s People’s Liberation Army’s Eastern Theater Command, said the drills would be conducted in the Taiwan Strait and areas to the north, southwest, southeast and east of the island.

Shi said the activities would focus on sea-air combat readiness patrol, “joint seizure of comprehensive superiority” and blockades on key ports. It was also the first large-scale military drill where the command publicly mentioned one goal was “all-dimensional deterrence outside the island chain.”

“It is a stern warning against ‘Taiwan independence’ separatist forces and external interference forces, and it is a legitimate and necessary action to safeguard China’s sovereignty and national unity,” Shi said.

China and Taiwan have been governed separately since 1949, when a civil war brought the Communist Party to power in Beijing. Defeated Nationalist Party forces fled to Taiwan. The island has operated since then with its own government, though the mainland’s government claims it as sovereign territory.

The command on Monday deployed destroyers, frigates, fighters, bombers and unmanned aerial vehicles, alongside long-range rockets, to the north and southwest of the Taiwan Strait. It carried out live-fire exercises against targets in the waters as well. Among other training, drills to test the capabilities of sea-air coordination and precise target hunting were conducted in the waters and airspace to the east of the strait.

Hsieh Jih-sheng, deputy chief of the general staff for intelligence of the Taiwanese Defense Ministry, said that as of 3 p.m. Monday, 89 aircraft and drones were operating around the strait, with 67 of them entering the “response zone” — airspace under the force’s monitoring and response. In the sea, the ministry detected 14 navy ships around the strait and four other warships in the Western Pacific, in addition to 14 coast guard vessels.

“Conducting live-fire exercises around the Taiwan Strait ... does not only mean military pressure on us. It may bring more complex impact and challenges to the international community and neighboring countries,” Hsieh told reporters.

Military drills are set to continue Tuesday. Taiwan’s Civil Aviation Administration said Chinese authorities had issued a notice saying seven temporary dangerous zones would be set up around the strait to carry out rocket-firing exercises from 8 a.m. to 6 p.m. on Tuesday, barring aircraft from entering them.

The Taiwanese aviation authority said more than 850 international flights were initially scheduled during that period and the drills would affect over 100,000 travelers. Over 80 domestic flights, involving around 6,000 passengers, were also canceled, it added.

The Chinese command released themed posters about the drills online accompanied by provocative wording. One poster depicted two shields with the Great Wall alongside three military aircraft and two ships. Its social media post said the drills were about the “Shield of Justice, Smashing Illusion,” adding that any foreign interlopers or separatists touching the shields would be eliminated.

In October, the Taiwanese government said it would accelerate the building of a “Taiwan Shield” or “T-Dome” air defense system in the face of the military threat from China.

The military tensions came a day after Taipei Mayor Chiang Wan-an said he hoped the Taiwan Strait would be associated with peace and prosperity, instead of “crashing waves and howling winds,” during a trip to Shanghai.