Two of Australia's richest people, Gina Rinehart and Anthony Platt, have taken out newspaper ads in the US to declare their unwavering love for President-elect Donald Trump, who will be inaugurated on Monday.

Platt's ad in the New York Times on Sunday featured a map of the United States (without Hawaii and Alaska) and claimed that Trump would revive the country's manufacturing industry.

"Congratulations to President Trump," it said. “I am honored to support your call to make America great again by bringing manufacturing jobs back home.”

The major settlement comes just two years after Trump described Platt as a "red-headed weirdo from Australia" after he was accused of leaking sensitive nuclear submarine information to Platt.

Earlier this month, Reinhart took out nearly identical ads in the tabloids The New York Post and The Wall Street Journal, titled "To Outstanding Leaders," in her Post letter.

"Who knew that high levels of government regulation, supervision and taxes would not help encourage investment," the report said. “Investment is critical to improving the living standards of a country’s people.

"We know you love your country and are deeply committed to serving its people."

Australia's billionaires appear to have enviable access to the president-elect. Trump recently dined with James Packer and Elon Musk at Trump's Mar-a-Lago resort, according to photos of the meal uploaded to Instagram.

But the guest list for Trump's inauguration is being hastily reshuffled as the event is moved indoors due to an "Arctic explosion," in the words of the president-elect who is sweeping Washington.

The ceremony will now take place in the Capitol Rotunda - the same building where he incited a violent mob equipped with a gallows to hang the vice president in 2021 - urging them to "fight like hell" to overturn a free and fair election.

The indoor rotunda can accommodate only a fraction of the thousands of people previously expected to gather on the National Mall to watch the outdoor inauguration. Due to last-minute changes, it's unclear who will appear on the now more exclusive roster.

Trump's last inauguration was in 2017, and his administration became notorious for insisting that it drew the largest crowds ever, a position that was not supported by evidence.

President Joe Biden's last inauguration in 2021 was overshadowed by the raging coronavirus pandemic. Trump's 2025 inauguration will be the first to be moved indoors since Ronald Reagan's second inauguration in 1985, also in response to cold weather.

Officially, Australia will be represented by the country's ambassador to the United States, Kevin Rudd, and Foreign Affairs Minister Anthony Wong.

"We are only one of a handful of foreign governments to receive this invitation, which reflects the strong alliance between Australia and the United States," Huang said.

Rudd has been critical of Trump in the past, with Trump calling him "a little bit obnoxious" and "not the brightest lightbulb" in response, and Rudd reportedly met with the elected president in recent days at a hotel owned by Trump. The president met briefly. Florida golf courses.

"There is direct contact, which is a good thing," Prime Minister Anthony Albanese said.

"Kevin Rudd has been very active in developing our relationship with the new government and I am very confident that Australia is demonstrating the value we place on our relationship with the United States by engaging the former prime minister as our ambassador."