Donald Trump is back. His second run to the White House was filled with outlandish promises, most with very little detail.

In case you missed them, here are seven of Trump’s wildest 2024 campaign pledges.

Indict Biden and other political enemies

Soon after his 2023 indictment on 37 criminal counts for allegedly mishandling classified documents, Trump announced plans to appoint a special prosecutor to go after Joe Biden and the “entire Biden crime family”.

Multiple outlets report Trump and his allies have also been coming up with plans to punish his critics with investigations, such as Manhattan District Attorney Alvin Bragg – who is black – for alleged ‘‘racist law enforcement policies’’. Bragg previously indicted Trump for paying porn star Stormy Daniels to keep quiet about an alleged affair ahead of the 2016 election.

Trump has not revealed the revenge plans publicly, but has hinted at them multiple times.

“The precedent on doing what they did, with the weaponisation, using the DOJ and the FBI to go after their political opponents, that is so bad,” Trump told Lou Dobbs in January, referring to the indictments and lawsuits he was facing.

“Pandora’s Box is open and that means that I can do it too.”

Conduct largest deportation in US history

Trump repeated hateful rhetoric about immigrants, both legal and illegal, throughout his election campaign.

Several of his talking points were proven false, such as his baseless claim that immigrants from Haiti were eating people’s pets in Ohio.

But Trump still intends to use police and the military to forcibly remove millions of “invaders” every year, and give police immunity from prosecution.

The American Immigration Council estimated that to deport just one million undocumented immigrants a year would cost more than $88 billion (A$132.9 billion) dollars annually.

Trump has also not ruled out building new detention camps, and hinted at an end to “sanctuary” city status which offers protection for unauthorised immigrants in certain cities from prosecution or deportation despite federal law.

Round up the homeless

The US has a massive homeless population of at least 550,000 people.  Contributing factors include rising housing costs, mental health issues, and drug addition.

Trump said he would ban urban camping and get rid of the homeless encampments that have become a common feature in many major cities.

He plans to arrest homeless people who violate the bans and relocate them to government-run tent cities built on “large parcels of inexpensive land,” staffed by doctors, psychiatrists, social workers and drug rehab specialists.

He has not revealed how the plan would be funded, or where the tent cities would be placed.

Trump has also called for the return of “mental institutions” to get people off the streets; large-scale, state-run psychiatric hospitals have fallen out of favour over the past few decades due to their association with inhumane treatment of patients.

Construct ‘freedom cities’ and flying cars

In 2023, Trump called for a public contest to design  10 futuristic “freedom cities” on federal land in pursuit of a “quantum leap in the American standard of living”.

His plan proposed investment in the development of flying vehicles, the creation of “hives of industry” by cutting off imports from China, and “baby bonuses” to spark a population surge.

“These freedom cities will reopen the frontier, reignite American imagination, and give hundreds of thousands of young people and other people, all hardworking families, a new shot at home ownership and in fact, the American dream,” Trump said.

“Just as the United States led the automotive revolution in the last century, I want to ensure that America, not China, leads this revolution in air mobility.”

Introduce huge tariff hikes

A cornerstone of Trump’s economic policy is his plan to implement tariffs between 10 and 20 per cent on all imported goods.

Goods from China will be targeted by tariffs of more than 60 per cent, and Trump has also suggested imposing tariffs higher than 200 per cent on vehicles imported from Mexico.

Tariffs are a tax on imported goods, ranging from clothes to car parts. But the companies that produce the goods do not pay the tariffs – the companies who import the goods pay it and then could pass the additional cost on to consumers.

Tax Policy Center analysis found a 20 per cent worldwide tariff and a 60 per cent levy on Chinese goods would raise costs by $3000 (A$4531) in 2025 for the average American household, and reduce average after-tax incomes by almost 3 per cent.

The tax think tank also found the Mexico vehicle tariff would increase household costs by an average $600 (A$906).

American consumers would lose up to $78 billion (A$117.8 billion) annually in spending power, according to National Retail Federation.

Make guns easier to buy

Trump told the National Rifle Association’s (NRA) annual convention in May that he would “roll back every Biden attack on the Second Amendment”.

This means loosening background check requirements and making opening the gun show loophole, which would allow buyers to evade required background checks.

He has also pledged to fire the director of the Bureau of Alcohol, Tobacco, Firearms and Explosives as soon as his administration begins, claiming the agency is too hard on gun owners.

In the US, more than 40,000 people were killed in gun violence in 2023, with suicides making up the majority.

Mass shooting events are also a huge issues, with 385 mass shootings counted across the country by September this year.

Shut down the Department of Education

Trump has pledged several times to close the Department of Education and have state governments run education instead.

“We will drain the government education swamp and stop the abuse of your taxpayer dollars to indoctrinate America’s youth with all sorts of things that you don’t want to have our youth hearing,” he said at a September rally.

State and local school boards already have the power to set curriculum, establish schools and determine enrolment eligibility.

Some of the Department of Education’s biggest roles are to administer federal funding appropriated by Congress to schools and manage the federal student loan and financial aid programs.

Trump has not said what will happen to federally-funded education programs when the department is closed, or how he will manage to close it down in the first place – doing so would require an act of Congress.

His promise comes amid a broader push from conservatives to restrict or ban education on sexual orientation, gender identity, slavery, inequality and racism.

Possibly abandon term limit

American presidents can only serve a maximum two terms in office; eight years in total.

Trump is set to begin his second and final term as president, but he hinted he would like to extend his time in the top spot. However, he has not promised to go through with it.

During a speech at the NRA’s annual convention in May, he referenced 32nd US President Franklin D. Roosevelt’s long tenure.

The 22nd Amendment to the US Constitution limiting presidents to two terms was ratified in 1951, almost six years after Roosevelt’s death.

“You know, FDR 16 years – almost 16 years – he was four terms. I don’t know, are we going to be considered three-term? Or two-term?” Trump said at the NRA event.

Politico reported this prompted some in the crowd to yell in response, “Three!”

This was not the first time Trump floated the notion of extending his stay in the White House, having suggested it during his unsuccessful 2020 presidential campaign.

But he has also flip-flopped on the idea, telling Time magazine in April he “wouldn’t be in favour of it at all”.