President Trump said during an interview with The New York Times that he regretted not ordering the National Guard to seize voting machines in swing states after his loss in the 2020 election, even though he doubted whether the Guard was “sophisticated enough” to carry out the order effectively.

The remarks by Mr. Trump in the interview last week harked back to one of the most perilous moments from his first term in office, when he was urged by some advisers to order his national security agencies to take control of machines manufactured by Dominion Voting Systems in an effort to find evidence that they had been hacked to rig the election against him.

The statement also came as he has continued his attacks on digital voting machines, saying that he wants to “lead a movement” to get rid of them altogether in advance of this year’s midterm elections.

Mr. Trump has long been obsessed with voting machines, particularly those built by Dominion, a company that has figured prominently in conspiracy theories that technology was used to rob him of victory in his race against Joseph R. Biden Jr.

Allegations that Dominion machines were hacked in a plot to flip votes away from Mr. Trump swirled constantly in the chaotic period after the 2020 election and sat at the heart of several lawsuits filed by the pro-Trump lawyer Sidney Powell that sought to overturn the results of the vote in four key swing states.