President Donald Trump is teasing show-stopping announcements he may include in his State of the Union address on Tuesday.

Ideas he has publicly toyed with include the declaration of a national emergency to secure border-wall funding and the confirmation of a second meeting with North Korea's Kim Jong Un.

Trump's goal with an emergency declaration would be to spend money on a border wall without approval from Congress, though a new poll indicates it would be an unpopular move.

In an interview that aired Sunday, Trump also said that his next meeting with Kim "is set" and that he would most likely reveal details like the date and venue on Tuesday.

President Donald Trump has been teasing bombshells that he may drop during his State of the Union address on Tuesday night.

Trump has publicly mulled using the speech to declare a national emergency over illegal immigration and to confirm a new summit with North Korean leader Kim Jong Un.

Asked whether he would declare a national state of emergency, Trump told reporters on Friday to "listen closely" to the address.

Trump has mulled declaring an emergency as a way of getting money to build a wall along the southwestern US border without the approval of Congress.

The inability of Trump and lawmakers to agree on wall funding caused a record-breaking partial government shutdown, which stretched from late December to the end of January.

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On Friday, when asked whether people should expect him to declare a national emergency, Trump said: "I think there's a good chance that we'll have to do that. But we will at the same time be building, regardless, we're building a wall. And we're building a lot of wall. But I can do it a lot faster the other way."

He hinted that the State of the Union was where he would announce the move.

"Well, I'm saying listen closely to the State of the Union," he said. "I think you'll find it very exciting."

Trump delivering the State of the Union address in 2018. Chip Somodevilla/Getty Images

Trump told The New York Times last week that declaring a national emergency might be his chosen route to try to get the wall built.

"I’ll continue to build the wall and we'll get the wall finished," he said. "Now whether or not I declare a national emergency — that you'll see."

He continued to call the issue an "emergency" on Sunday, when speaking on the CBS show "Face the Nation."

"It's national emergency, it's other things and you know there have been plenty national emergencies called," he said.

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CNN last month reported that the White House was preparing a draft national emergency declaration and had identified where it could get the money for a wall.

Such a move would appear to be unpopular. In a CBS poll published Sunday, 66% of Americans said Trump should not declare a national emergency if Congress did not fund a wall.

Trump arriving to deliver the State of the Union address in January 2018. Win McNamee/Getty Images

Trump raised the issue of the border wall again on Sunday, writing on Twitter that "Republicans must be prepared to do whatever is necessary for STRONG Border Security."

"Dems do nothing," he wrote. "If there is no Wall, there is no Security. Human Trafficking, Drugs and Criminals of all dimensions - KEEP OUT!,"

A bipartisan group of lawmakers are working to reach a compromise on border security before government funding runs out February 15, when another government shutdown could begin.

In an interview that aired Sunday, Trump told CBS he would not take the prospect of another shutdown "off the table."

Another summit with Kim Jong Un

Trump also said in the Sunday interview that his next meeting with North Korea's leader "is set" and that he would reveal details about the planned meeting "probably State of the Union or shortly before."

Trump said the US and North Korea had "made tremendous progress" and contradicted the belief of Director of National Intelligence Dan Coats that Kim was unlikely to surrender his nuclear weapons. "That's what the intelligence chief thinks," he said.

Trump with North Korean leader Kim Jong Un on Sentosa Island in Singapore in June. Evan Vucci/AP

Trump instead reiterated his belief that the countries could come to an agreement, saying "there's also a very good chance that we will make a deal."

"It has a chance to be one of the great economic countries in the world," he said. "He can't do that with nuclear weapons and he can't do that on the path they're on now.

"I like him. I get along with him great. We have a fantastic chemistry."