President Donald Trump on Sunday didn’t rule out running for a third term, even though it’s prohibited by the United States’ Constitution, adding that he was “not joking.”

“A lot of people want me to do it,” Trump said in an interview with NBC News. “But, I mean, I basically tell them we have a long way to go, you know, it’s very early in the administration.”

Trump said he’s “focused on the current” term. When asked whether he wants a third term, he added: “I like working.”

“I’m not joking,” he said when asked to clarify. “But I’m not − it is far too early to think about it.”

Trump was later asked about the comments on Air Force One, adding: “I don’t even want to talk about a third term now.”

“Because no matter how you look at it, you’ve got a long time to go,” he said. “We have a long time. We have almost four years to go and that’s a long time but despite that so many people are saying you’ve got to run again.”

The 22nd Amendment to the Constitution bars people from being elected to the presidency more than twice.

There are only two ways to change the Constitution: An amendment can be proposed by Congress with a two-thirds majority vote in both the House and Senate, or two-thirds of state legislatures can call a constitutional convention. Then three-fourths of the state legislatures or conventions (38 of 50) must ratify it.

Still, Trump has repeatedly toyed with the idea of running for a third term.

Asked by NBC whether he has been shown plans that would allow him to seek a third term, Trump said: “There are methods which you could do it,” including Vice President JD Vance running for president and then giving the role to Trump.

“There are others too,” he said, but refused to share them.

Former Trump White House chief strategist Steve Bannon told News Nation that he thinks Trump will “run and win again in 2028” and that there are “a couple of alternatives” which would allow him to do so, even though there currently aren’t under U.S. law.