President Donald Trump quipped about Sen. Elizabeth Warren’s (D-Mass.) stability — and offered comments on weightier foreign and domestic matters — during an exclusive interview with host Pete Hegseth on Fox News Channel’s “All-American New Year” on Monday night, New Year’s Eve.

When Hegseth asked him if he thought Sen. Elizabeth Warren (D-Mass.) believed she could win in a bid for president in 2020, the president joked, “You’d have to ask her psychiatrist.”

Warren announced on Monday that she was filing paperwork to form an exploratory committee. She’s the first Democratic to do so for the 2020 election.

Related: Elizabeth Warren Announces She Will Run for President in 2020

Trump said he was happy about Warren’s announcement, that he hopes she secures the Democratic nomination — and that her running would be a “wonderful thing” for him.

“I’d love to run against her,” said Trump, adding that he believes he is “going to win big.”

Trump wielded some sharp criticism of Democratic leaders Sen. Chuck Schumer (D-N.Y.) and Rep. Nancy Pelosi (D-Calif.) during the interview, inviting them to work with him to resolve the impasse over funding for the border wall, as “a lot of people are looking to get their paycheck.”

“They can come over right now, they could have come over any time. I spent Christmas in the White House. I spent New Year’s Eve now in the White House and you know, I’m here. I’m ready to go.”

Trump was in Washington working, but Democrat leaders have not yet returned.

The new session of Congress begins Thursday, January 3.

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Trump described the Democrat leaders’ antics as “pure obstruction,” pointing specifically to their refusal to fund the wall — which led to the current partial government shutdown — and the painfully slow process of approving 360 of his nominees for various positions.

On whether he plans to stand firm on his request for $5 billion to build a barrier on the southern border, the president was resolute.

“We have to have border security and a wall is part of border security. You know, I hear so much about ‘the wall is old-fashioned.’ No, the wall is not old-fashioned, the wall is 100 percent foolproof … I guess they’d say the wheel is old-fashioned, but it’s been around for a long time. The wall is the only way to do it — and technology. Nobody knows more about technology than me, but technology [is] just the bells and whistles on the wall.”

“If you don’t have the wall, you’re going to have people coming in,” he added. “And my border patrol people, they do a fantastic job. But you know, they need the backup of the wall and they’re the ones that want it more than anybody, Pete.”

He added on this topic, “No, we are not giving up [on the wall]. We have to have border security and the wall is a big part of border security, the biggest part.”

Related: Trump on Border Wall Funding: Trump ‘Is Not Going to Walk Away from This Fight’

Shifting the focus from domestic to foreign matters, Trump told Hegseth that his discussion with Sen. Lindsey Graham (R-S.C.) regarding plans to withdraw troops from Syria included reassurances on the manner of withdrawal.

“I never said that I’m gonna rush out. We’re going to get out. We’re getting out of Syria; we’re bringing our young, great troops home after so many years. You know, we were supposed to be in Syria for three to four months and that was four or five years ago. And it’s time. We have to bring them home … I campaigned on getting out of the endless wars.”

“We’ve really largely eradicated ISIS,” he added. “Now that doesn’t mean we don’t totally finish the job, but that’s going to be a very short period of time. We have to bring our troops back home. It’s time.”

Among his predictions for 2019 were the creation of a “great form of wealth” for the country, including jobs, a strong military, and “tremendous trade deals.”

On a lighter note, Trump identified the American people as 2018’s biggest winners, noting specifically the tax cuts, jobs, and rebuilt military citizens have enjoyed under his administration.

Among his predictions for 2019 were the creation of a “great form of wealth” for the country, including jobs, a strong military, and “tremendous trade deals.”

About his resolutions, Trump simply said, “Just success and prosperity and health for our country. That’s all I want.”

On Tuesday morning, as the New Year dawned, President Trump tweeted good wishes to all, including “the haters and the fake news media.”

He included a prediction of a “fantastic year” for all in 2019, with the exception of those suffering from “Trump Derangement Syndrome” — for whom he offered a word of advice: “Just calm down and enjoy the ride — great things are happening for this country.”

And check out this video:

Michele Blood is a Flemington, New Jersey-based freelance writer and regular contributor to LifeZette.