Donald Trump is one of two presidents to serve two non-consecutive terms, second only to Grover Cleveland, who did it in the 1800s.
But Mr Trump has made comments hinting at a third term in office.
An amendment to the Constitution, which is the supreme law of the United States, prohibits anyone from serving for more than two terms.
But what has the president said, how likely is he to pursue a third term in 2028 – and is it even possible?
Has a third term been done before?
Franklin Roosevelt served as US president four times from 1933 to 1945, because there was nothing in the original US Constitution that limited how many terms a president could serve.
But later the 22nd amendment limited presidents to two four-year terms, irrespective of whether they were served consecutively or not.
Image: Franklin Roosevelt during his third term as president in 1942. Pic: AP
Congress passed the 22nd amendment two years after Roosevelt’s death and it took effect from the 1952 election.
No one has been able to serve more than two terms since.
The amendment states “no person shall be elected to the office of the president more than twice”.
When asked about the possibility, he said: “A lot of people want me to do it. But, I mean, I basically tell them we have a long way to go, you know, it’s very early in the administration.
“I’m focused on the current,” he added.
When asked whether he wanted another term, the president responded, “I like working.”
“I’m not joking,” Mr Trump said, when asked to clarify. “But I’m not – it is far too early to think about it.”
When asked whether he has been presented with plans to allow him to seek a third term, Mr Trump said, there are “methods which you could do it”.
NBC News asked about a possible scenario in which vice president JD Vance would run for office and then pass the role to Mr Trump. Mr Trump responded that “that’s one” method.
“But there are others, too,” he added.
Asked to share another method, he simply responded “no.”
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18:27
James and Ronna discuss whether JD Vance could make a future US president.
Some of Mr Trump’s allies have been vocal in their support for him pursuing a third term.
Steve Bannon, a former Trump strategist who runs the right-wing War Room podcast, called for the president to run again during a speech at the Conservative Political Action Conference last month, adding in a later interview with News Nation that he believed the president would “run and win again in 2028”.
Republican congressman Andy Ogles crafted a resolution calling for the extension of presidential term limits, which would allow Trump to seek another term in office.
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It would be “virtually impossible”, retired Commonwealth Court judge Joseph Cosgrove tells Sky News.
He would have to amend the Constitution to do it, which Mr Cosgrove says is an “arduous task”.
“The usual method requires two-thirds of both the House and Senate to propose an amendment, which would then require three-fourths of the states to approve,” he explains.
“Given the extremely close political divisions in the United States, neither of these events is foreseeable. Even if the Republicans control both the House and Senate, their majority will be so slim that no revision of the 22nd amendment could ever occur in this climate.”
Mr Fortier, who agreed with Mr Cosgrove’s points, says some legal scholars have suggested there are loopholes that could be exploited to get around the two-term limit.
“They argue that the 22nd amendment prohibits someone from running for a third term [but] not from serving a third term,” he says.
“And by an ingenious trick, a term-limited president could be elected to the vice presidency or placed in the line of succession and then ascend to the presidency when those ahead of him in the line of succession resign.”
This is the method Mr Trump alluded to, in which Mr Vance would be elected president in 2028 with Mr Trump as his vice president, before switching positions.
Mr Fortier says that this theory, however, ignores a number of other amendments and other constitutional laws which indicate that a vice president or someone else in the line of succession “must meet the qualifications to become president”.
And Mr Trump, or someone else who has already served two terms as president, would not meet that criteria thanks to the 22nd amendment.
Additionally, Derek Muller, a professor of election law at Notre Dame, notes the 12th amendment, which was ratified in 1804, says “no person constitutionally ineligible to the office of president shall be eligible to that of vice-president of the United States.”
This means that because Mr Trump is not able to be president in 2028, he also cannot be vice president, Prof Muller explains.
“I don’t think there’s any ‘one weird trick’ to getting around presidential term limits,” he continues, adding that pursuing a third term would require extraordinary acceptance by federal and state officials, not to mention the courts and voters themselves.
He suggested Mr Trump is talking about a third term for political reasons to “show as much strength as possible” rather than with the intention of running again.
“A lame-duck president like Donald Trump has every incentive in the world to make it seem like he’s not a lame duck,” he said.
Democratic congressman Daniel Goldman, who served as lead counsel for Mr Trump’s first impeachment, said in a statement: “This is yet another escalation in his clear effort to take over the government and dismantle our democracy.
“If Congressional Republicans believe in the Constitution, they will go on the record opposing Trump’s ambitions for a third term.”
What has the president said in the past?
It was in the lead-up to the 2020 election, which Mr Trump lost to Joe Biden, that he first started hinting at seeking a third term.
At a rally in August 2020, he told supporters he would win the next election and then possibly “go for another four years” because “they spied on my campaign”, an apparent nod to his unsubstantiated claims that Barack Obama had his “wires tapped” before he was elected in 2016.
According to Forbes, Mr Trump told another rally that if he were to win the 2020 election, he would “negotiate” a third term, adding he was “probably entitled to another four [years] after that” based on “the way we were treated”.
But in an interview in 2023 with NBC News, Mr Trump was asked if there was any scenario in which he would seek a third term should he win the presidency next year, to which he responded: “No.”
And in April 2024 he told Time magazine he “wouldn’t be in favour” of an extended term – but two vague comments he made in speeches last year stoked rumours he could try it.
One was during a National Rifle Association speech, when he asked supporters if he would be considered “three-term or two-term” – though this appeared to be in reference to his unsubstantiated claims that he should have won the 2020 election but that it was rigged against him.
After repeatedly telling them to vote “just this time”, he added: “In four years, you don’t have to vote again. We’ll have it fixed so good, you’re not going to have to vote.”
John Fortier, senior research fellow at the American Enterprise Institute, says the comments from the Christian event have been taken out of context, and that Mr Trump was simply trying to “encourage the sometimes reluctant Christian community to vote in this election”.
“Trump in office would be able to address their concerns so much so that it would not matter if they chose to vote in future elections,” he explains.
“It was not an indication that Trump would cancel future elections or try to serve beyond his second term.”
A senior Democrat has taken to the Senate floor to speak against US President Donald Trump – with the 17-plus-hour speech still ongoing.
Cory Booker, a New Jersey senator, began speaking around 7pm (midnight in the UK) and said he intended to disrupt the “normal business of the United States Senate for as long as I am physically able”.
Referring to Mr Trump’s presidency, he said: “I rise tonight because I believe sincerely that our country is in crisis.”
As of 5pm in the UK, Mr Booker was still speaking, having spoken for more than 17 hours. He has remained standing for the entire duration, as he would lose control of the floor if he left his desk or sat down.
Image: As of 4pm, Cory Booker has held the Senate floor for more than 16 hours. Pic: Senate Television / AP
Other Democrat senators have joined Mr Booker to ask questions so he can rest his voice, including Senate minority leader Chuck Schumer.
At the start of his speech, Mr Booker said: “These are not normal times in our nation. And they should not be treated as such in the United States Senate.
“The threats to the American people and American democracy are grave and urgent, and we all must do more to stand against them.”
Overnight, he referenced Strom Thurmond of South Carolina, who filibustered for 24 hours and 18 minutes against the Civil Rights Act of 1957.
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“You think we got civil rights one day because Strom Thurmond – after filibustering for 24 hours – you think we got civil rights because he came to the floor one day and said ‘I’ve seen the light’,” he said.
“No, we got civil rights because people marched for it, sweat for it and [civil rights leader] John Lewis bled for it.”
Only Mr Thurmond and Republican Senator Ted Cruz – who spoke for 21 hours and 19 minutes against the Affordable Care Act in 2013 – have held the Senate floor for longer than Mr Booker.
Mangione has not yet been asked to enter a plea to the federal charges.
Here’s what we know about him.
Wealth, private school and Ivy League education
Mangione was born and raised in Maryland and has links to San Francisco and Hawaii.
His social media lists him as being from Towson, a well-to-do area to the north of the city of Baltimore.
He is the grandson of a wealthy property developer and philanthropist and the cousin of a current Maryland state legislator.
He attended Gilman School – a private all-boys school in Baltimore. The school’s annual fees are up to $37,690 (around £29,000) and it boasts alumni including NFL stars and former senators.
After graduating in 2016, Mangione went to the University of Pennsylvania, one of America’s elite Ivy League schools.
According to his social media, he studied computer science and launched a group named UPGRADE (UPenn Game Research and Development Environment).
A university spokesperson said he earned undergraduate and graduate degrees there.
He later co-founded his own computer game company, which focused on small, simplistic games.
Image: Mangione went to a prestigious Ivy League university. Pic: LinkedIn
‘No complaints – a great guy’
According to his LinkedIn page, Mangione moved to California in 2020 and worked for the car-buying website TrueCar. The firm’s boss said he left last year.
Mangione currently lists himself as from Honolulu on LinkedIn, with pictures on Instagram showing him on the Hawaiian island.
In the first half of 2022, he reportedly lived at Surfbreak, a co-living space aimed at remote workers in Honolulu’s Waikiki neighbourhood.
“Luigi was just widely considered to be a great guy. There were no complaints,” Josiah Ryan, a spokesperson for Surfbreak’s owner, told the AP news agency.
“There was no sign that might point to these alleged crimes they’re saying he committed.”
Mr Ryan said Mangione left to get surgery on the US mainland for chronic back pain he suffered from since childhood.
Document reveals back condition
Mangione wrote about his health issue online, saying he has spondylolisthesis – a condition where one of the bones in the spine slips forwards.
He details the severity of his “injury” as “low grade two” and goes into fitness goals, diet advice and notes about the condition.
Image: The suspect’s notes say he has back condition spondylolisthesis
Image: His X banner image shows a back X-ray
It’s unclear if the condition is linked to the motive, which police have not publicly identified, but it gives context about his health issues.
Analysis of his Goodreads profile also shows he read books including Crooked: Outwitting The Back Pain Industry and Getting On The Road To Recovery, and Why We Get Sick: The Hidden Epidemic At The Root Of Most Chronic Disease – And How To Fight It.
A banner image on his X account also features an X-ray of a lower back with screws.
Law enforcement officials told NBC News they are looking at whether the X-ray is Mangione’s or from a relative and whether it’s connected to the shooting.
‘Violence is necessary to survive’
Mangione appears to have had an active social media presence.
His X account regularly shared and reposted pieces about topics such as artificial intelligence (AI), philosophy, and the future of humanity.
His Goodreads account also gave a four-star review to Industrial Society And Its Future – by notorious US terrorist Theodore Kaczynski.
The piece, which rails against technological advancement, became known as the Unabomber Manifesto after its author began a mail bombing campaign which lasted nearly 20 years.
Three people were killed and dozens were injured before Kaczynski’s arrest in 1996.
The Goodreads review said: “When all other forms of communication fail, violence is necessary to survive. You may not like his methods, but to see things from his perspective, it’s not terrorism, it’s war and revolution.
“‘Violence never solved anything’ is a statement uttered by cowards and predators.”
Image: Luigi Mangione. Pic: Facebook
Why are some calling Mangione a ‘hero’?
A search of social media sites such as Reddit reveals a thread of people who are sympathetic to the suspect.
Highly rated comments on the site include: “Screw the McDonald’s employee that ratted him out” and “Only a matter of time till shirts with #FreeLuigi start popping up”.
To many, these are shocking comments about someone accused of carrying out a cold-blooded killing. But what’s behind them?
Many in the US pay thousands in expensive insurance premiums to cover themselves and their family, while others rely on the Medicare federal insurance programme.
Support for Mangione appears to come from resentment over this and accusations that companies go to great lengths to avoid paying for treatments in order to maximise their profits.
“He got charged with murder quicker than insurance companies deny claims”, said a comment on Reddit with nearly 7,000 likes.
One post that went viral on X before the suspect’s arrest was from Anthony Zenkus, a Columbia University professor.
He wrote: “We mourn the deaths of the 68,000 Americans who needlessly die each year so that insurance company execs like Brian Thompson can become multimillionaires.”
Image: Police shared this picture of the suspect following the shooting. Pic: NYPD
A chart shared widely on X claims to show denial rates by UnitedHealthcare exceed those of competitors, using data from consumer finance website ValuePenguin. This is consistent with publicly available data from 2023 analysed by Sky News.
Other people online appear to be angry about what they say is the disparity between the resources put into Mr Thompson’s case and how less well-off people are treated.
One comment on Reddit with 4,000 likes says: “The murdered guy in death, like in life, is still sucking up a huge undeserved and unwanted portion of resources.
“How many underprivileged people’s murders are going unsolved because NYPD and the feds are spending millions on this overpaid, rich, morally questionable millionaire’s murder.”
Arrested in McDonald’s with ‘ghost gun’
Mangione was detained in a Pennsylvania McDonald’s after a five-day search, carrying a gun that matched the one used in the shooting and a fake ID, police said.
He was arrested in Altoona, around 230 miles (370km) west of New York, after a tip-off from a McDonald’s employee who recognised him from the police appeals.
Mangione also had a fake New Jersey ID matching one used by the suspect to check into a hostel before the killing, said New York police commissioner Jessica Tisch.
He was found carrying a “handwritten document” that Ms Tisch said “spoke to both his motivation and mindset”.
Joseph Kenny, New York’s chief of detectives, said it appeared to show “some ill-will towards corporate America”.
Pennsylvania prosecutor Peter Weeks said Mangione was found with a passport and $10,000 (£7,840) – $2,000 of it in foreign currency.
‘Message’ on bullets
Brian Thompson, 50, was chief executive of UnitedHealthcare – the fourth-largest public company in the US behind Walmart, Amazon, and Apple – and was paid about $10m (£7.8m) a year.
It’s the largest provider of Medicare Advantage plans and manages insurance for employers and state and federally funded programmes.
Mr Thompson – who was married with two sons – was shot on 4 December as he was walking to a New York hotel where his company was holding an investors’ conference.
Image: CCTV showed a person shooting Mr Thompson from behind. Pic: NYPD/Reuters
As Mr Thompson walked towards the Hilton hotel on Sixth Avenue, a gunman appeared behind him from between parked cars.
He was shot in the back and calf and died from his injuries.
The words “defend”, “deny”, and “depose” were written on the cases of bullets found at the scene – similar to the title of a book that criticises health insurance companies.
Mr Thompson’s wife said he was an “incredibly loving father to our two sons” and a “loving, generous, talented man who truly lived life to the fullest”.
UnitedHealthcare called him a “highly respected colleague and friend to all who worked with him”.
A Democratic senator is delivering a marathon speech in the US Senate in protest against Donald Trump.
Cory Booker, 55, took to the floor at 7pm local time on Monday (midnight in the UK), saying he would remain there as long as he was “physically able”.
As of 5pm in the UK, Mr Booker was still going – more than 17 hours after he started.
The senator for New Jersey said his goal is to “uplift the stories of Americans who are being harmed by the Trump administration’s reckless actions, attempts to undermine our institutions, and disregard for the rule of law”.
During his speech, Mr Booker has only taken brief breaks from speaking, giving the floor instead to questions from his Democratic colleagues, according to Sky News’ US partner network, NBC News.
According to the rules of the Senate, as long as he stays at the podium Mr Booker will hold the floor – meaning he cannot leave at any point, even to go to the toilet or to eat.
So who exactly is the Democratic senator, and what is his multi-hour speech all about?
Image: Mr Booker has criticised the Trump administration during his speech. Pic: Senate Television via AP
Rising star of Democratic Party
Mr Booker was born in Washington DC and moved to northern New Jersey when he was a boy.
He is a graduate of Stanford University and Yale Law and started his career as a lawyer for charities.
Entering politics, he was considered a rising star in the Democratic Party. He was elected to serve on the city council of New Jersey’s biggest state, Newark, and then as mayor, a position he held until 2013.
He was first elected to the US Senate in 2013 during a special election held after the death of politician and businessman Frank Lautenberg.
He went on to win his first full term in 2014 and was re-elected in 2020.
2020 presidential bid
In February 2019 Mr Booker launched his bid for the US presidency from the steps of his home in Newark.
At the time, he played on his personal ties to the “low-income, inner city community” and urged for the US to return to a “common sense of purpose”.
He later dropped out of the race after struggling to raise the money required to make a bid for the White House.
Image: Senator Cory Booker. Pic: AP
Why is he speaking in the Senate?
By holding the floor in the Senate, Mr Booker is protesting against the Trump administration.
Before he began, the senator said he had the intention of “getting in some good trouble”, NBC News reported.
He read letters from constituents about how Mr Trump’s cuts were already taking a toll on their lives.
The longest Senate speeches in history
As he reached 16 hours of speaking, Mr Booker already had the sixth-longest speech in Senate history.
However, he still has a while to go to beat the all-time record for the longest individual speech.
According to the Senate’s website, this belongs to Strom Thurmond of South Carolina, who filibustered for 24 hours and 18 minutes against the Civil Rights Act of 1957.
Only one other sitting senator has spoken for longer than Mr Booker.
In 2013, Senator Ted Cruz, a Republican from Texas, held the floor for 21 hours and 19 minutes to contest Barack Obama’s healthcare reform law.
As well as speaking about health law, Mr Cruz’s speech made headlines as he read the entirety of the Dr Seuss book Green Eggs And Ham, which he said at the time was a bedtime story to his children.
He claimed the US was giving up being a global leader, citing Mr Trump’s proposals to take over Greenland and Canada while feuding with longtime allies.
He also occasionally took aim at Elon Musk, the richest person in the world, who is advising Mr Trump and leading the Department of Government Efficiency (DOGE).
“In just 71 days, the president of the United States has inflicted so much harm on Americans’ safety; financial stability; the core foundations of our democracy,” Mr Booker said on the floor.
“These are not normal times in America. And they should not be treated as such in the United States Senate.”
Appearing to waver slightly on Tuesday morning, Mr Booker was accompanied by Senator Chris Murphy. In 2016, Mr Booker joined the Connecticut Democrat when he held the floor for almost 15 hours to argue for gun control legislation.
Some reports have referred to Mr Booker’s speech as a filibuster, but technically it is not.
A filibuster is a speech meant to halt the advance of a specific piece of legislation.
Mr Booker’s performance is instead a broader critique of Mr Trump’s agenda, meant to hold up any business scheduled to take place in the Senate and draw attention to what Democrats are doing to contest the president.
Democrats have been forced to use these types of opposition methods as they do not hold a majority in either congressional chamber.