Mr Trump signed several executive orders at his inauguration parade at the Capital One Arena before travelling to the Oval Office to sign more. After the executive orders were announced to rapturous applause, Mr Trump threw the pens he had signed them with into the crowd.
As well as orders on the climate and federal workforce, he signed an order rescinding 78 Biden-era executive actions.
Officials had said earlier that the first wave of executive orders would include declaring a national emergency on the US-Mexico border as part of a wider crackdown on immigration and cross-border crime.
Sky News’ US partner NBC News reported Mr Trump is expected to sign more than 50 executive orders on Monday, and possibly more than 100, citing a person in his transition operation.
Border and immigration
On the border, Mr Trump said he would declare a national emergency in his inaugural speech.
During the inauguration ceremony, Mr Trump said: “All illegal entry will immediately be halted and we will begin the process of returning millions and millions of criminal aliens back to the places they came.
“I will end the practice of catch and release and I will send troops to the southern border to repel the disastrous invasion of our country.
“Under the orders I sign today we will also be designating the cartels as foreign terrorist organisations.”
In his first term, Mr Trump did the same after Congress refused to give him the money to build a border wall.
Energy and climate
Mr Trump signed an order removing the US from the Paris climate agreement for a second time, having taken the same action during his first presidency only for it to be reversed by President Biden.
He also revoked an executive order from President Biden that said 50% of new vehicle sales should be electric vehicles by 2030.
During his inauguration speech, the president said he would also declare “a national energy emergency”, adding: “We will drill baby drill.”
He continued: “We will be a rich nation again, and it is that liquid gold under our feet that will help to do it.”
NBC News reported this is aimed at expanding the administration’s ability to improve domestic energy production.
Alongside that, he reportedly will:
• allow more drilling both offshore and on federal lands
• end a freeze on liquid natural gas exports and
• cut off climate-related funding that was approved under the Inflation Reduction Act signed by President Biden
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Government workforce
In another executive order signed at the inauguration parade, Mr Trump said he would end the weaponisation of the government against political opponents. He will also direct every government agency to preserve all records about “political persecutions” in another order, he said.
He signed separate orders implementing a federal hiring freeze and mandating federal workers to return to in-person work full-time.
Mr Trump reportedly will also implement Schedule F.
This eliminates job protections for potentially thousands of federal workforce positions, which could make it easier to fire them.
Free speech and artificial intelligence
Mr Trump signed an executive order that he said was aimed at “restoring freedom of speech and ending federal censorship” at the Capital One Arena.
He had accused the Biden administration of suppressing free speech on online platforms.
“Over the last 4 years, the previous administration trampled free speech rights by censoring Americans’ speech on online
platforms, often by exerting substantial coercive pressure on third parties, such as social media companies, to moderate,
de-platform, or otherwise suppress speech that the federal government did not approve,” the White House said.
Mr Trump also revoked a 2023 executive order signed by Mr Biden that sought to reduce the risks that artificial intelligence poses to consumers, workers and national security.
Mr Biden’s order required developers of AI systems that pose risks to US national security, the economy, public health or safety to share the results of safety tests with the US government before they were released to the public.
Gender and diversity
Matching talking points from the campaign trail, Mr Trump said it would be government policy, through an executive order, that there would only be two genders recognised by the US government – male and female.
Speaking on Martin Luther King Jr Day he also promised to slash diversity, equity and inclusion (DEI) efforts, saying: “This week, I will also end the government policy of trying to socially engineer race and gender into every aspect of public and private life.
“We will forge a society that is colour-blind and merit-based.
“As of today, it will henceforth be the official policy of the US government that there are only two genders, male and female.”
Mr Trump also intends to reverse an order by President Biden that allows transgender people to serve openly in the military in their self-identified gender.
The order also provided greater access to medical care and support for gender transition.
The Pentagon, military and foreign affairs
Alongside that, NBC News said that Mr Trump would reverse two other decisions by the Democrat who beat him in the 2020 election.
One would change the location of the US Space Command headquarters, moving it from Colorado to Alabama.
The other would reverse a 2022 decision that provided paid leave and reimbursed transportation costs for troops and dependents who travelled out of state for abortion and other reproductive care.
Elsewhere, Mr Trump also rescinded sanctions on Jewish settlers who committed violence against West Bank Palestinians, according to the White House website.
He also rescinded the Biden administration’s last-minute decision to remove Cuba from the US list of state
sponsors of terrorism, the White House said.
TikTok and Hunter Biden
Mr Trump has said he would sign an extension for TikTok to find a buyer, to comply with the law that went into effect on Sunday.
Mr Trump would also reportedly suspend security clearance for 51 national security officials who signed a letter saying that Hunter Biden’s emails and laptop had the hallmarks of a Russian operation.