President Donald Trump is once again promising sweeping changes to how Americans vote—but constitutional experts say there is one major obstacle standing directly in his way.

The president has vowed to overhaul key parts of the nation’s election system ahead of the 2026 midterms, renewing his long-running criticism of mail voting and electronic voting machines.

Yet legal scholars across the political spectrum say the Constitution gives him far less authority than many Americans may assume.

The clash is setting the stage for what could become one of the biggest constitutional battles leading into the next election.

In a post on Truth Social, Trump pledged to pursue additional executive action aimed at changing the way federal elections are conducted.

Repeating claims he has made since the 2020 election, the president argued that mail voting and voting machines undermine election integrity and promised new measures that he said would help restore confidence in the electoral system.

Trump also claimed that the federal government, acting through the president, has authority over how states count and tabulate votes.

Election law experts strongly dispute that interpretation.

According to constitutional scholars, the U.S. Constitution places primary responsibility for administering elections in the hands of the states—not the president.

Article I of the Constitution gives state legislatures authority over the “Times, Places and Manner” of congressional elections while also allowing Congress to establish or modify national rules for federal elections.

The president is not assigned comparable constitutional authority over election administration.

“The president has very limited to zero authority over things related to the conduct of elections,” election law professor Rick Hasen of the University of California, Los Angeles, told the Associated Press.

That distinction has already been tested in court.

Earlier executive actions involving election rules faced legal challenges, with federal judges blocking portions after concluding that Congress—not the president—holds authority to establish nationwide election requirements.

Legal experts therefore argue that if Trump hopes to implement broad national election reforms, congressional legislation—not executive action—would almost certainly be required.

Even that path faces significant political hurdles.

Although Republicans currently control Congress, proposals eliminating voting machines or restricting mail voting would likely generate intense debate.

Many Republican-led states themselves make extensive use of absentee and mail voting.

Arizona, Florida, and Utah—all states Trump previously carried—allow large numbers of voters to cast ballots by mail.

Military personnel stationed overseas also rely heavily on absentee voting.

Completely eliminating mail voting could affect millions of voters across both political parties.

Trump’s latest comments also revived several longstanding claims regarding election fraud.

Multiple investigations following the 2020 election found no evidence of widespread fraud capable of changing the election’s outcome.

An Associated Press review identified fewer than 475 potential fraud cases across six contested battleground states—far below the margin needed to alter the results.

The president also argued that voting machines should be replaced with paper systems.

Election experts note that while many jurisdictions use electronic tabulators to count ballots, the overwhelming majority of American voters already cast paper ballots, creating physical records that can be audited if questions arise.

Those paper ballots remain one of the primary security safeguards used in modern U.S. elections.

Supporters of Trump’s proposals argue stronger federal standards would improve election security and increase public confidence in voting.

Critics counter that election administration has traditionally remained a state responsibility and warn that expanding presidential authority in this area would conflict with longstanding constitutional principles.

For now, the Constitution itself appears to remain the administration’s largest obstacle.

Without congressional approval, the president’s ability to reshape national election procedures remains highly limited under existing constitutional law.

Still, Trump’s latest pledge signals that election policy will once again become one of the central issues heading into the 2026 midterm campaign.

Whether those proposed changes ever become law is uncertain.

But one thing is already clear.

The next major battle over America’s elections may unfold not at polling places—but in Congress and the courts.