Donald Trump has signed his landmark policy into law in what he dubbed the "big, beautiful bill" .

The bill included flagstone parts of the Republican's agenda including tax cuts, spending boosts for defence and the immigration crackdown.

President Trump had been in loggerheads with some members of his own party, with some Republicans rising US debt, however only two House Republicans joined Democrats to vote against the bill.

He said: “This bill includes the largest tax cut in American history, the largest spending cut in American history, the largest border security investment in American history.”

Donald and Melania Trump appearing at the White House

President Donald Trump appears on a balcony next to the first lady Melania Trump

Some of the key policies in the "megabill" include an extra $100billion to Immigration and Customs Enforcement (ICE), massive cuts to Medicaid spending and new tax breaks on tipped income, overtime and Social Security.

Speaking to crowds at the White House, Trump said: "We're adding things like the biggest tax cut in the history of our country, a child tax credit. So many things are being added that we wouldn't even have time to discuss them when we were doing it.

"It includes the largest tax cut in American history, the largest spending cut $1.7trillion.

"Yet you won't even notice it. Just waste, fraud and abuse in American history."

<img data-id="fixed-image" src="https://www.gbnews.com/media-library/trump-presents-a-sweeping-spending-and-tax-legislation-known-as-the-one-big-beautiful-bill-act-u200b.jpg?id=61146346&width=980" alt="Trump presents a sweeping spending and tax legislation, known as the " one="" big="" beautiful="" bill="" act,"="" \u200b"="" width="100%" height="auto">

Trump presents a sweeping spending and tax legislation, known as the "One Big Beautiful Bill Act,"

The bill passed by a single vote in the Senate and later passed the House with a 219 to 213 vote on Thursday, with only two Republicans voting against it.

The bill's passage amounts to a big win for Trump and his Republican allies, who have argued it will boost economic growth, while largely dismissing a nonpartisan analysis predicting it will add more than $3trillion to the nation's $36.2 trillion debt.

The tense standoff over the bill included a record-long floor speech by House Democratic Leader Hakeem Jeffries, who spoke for eight hours and 46 minutes.

Jeffries blasted the bill as a giveaway to the wealthy that would strip low-income Americans of federally-backed health insurance and food aid benefits.

President Donald Trump gestures to the crowd

"I've never seen people so happy in our country because of that, because so many different groups of people are being taken care of: the military, civilians of all types, jobs of all types," Trump said at the ceremony.

He thanked House Speaker Mike Johnson and Senate Majority Leader John Thune for leading the bill through the two houses of Congress.

"So you have the biggest tax cut, the biggest spending cut, the largest border security investment in American history," Trump said.