A former Married at First Sight contestant says he has no idea why his car dealership was targeted by arsonists in an overnight firebombing.

James Susler, a business owner and contestant on season eight of the reality show, only opened his Chery Melbourne City dealership five days ago.

Overnight it was damaged in an arson attack after two men jumped a fence, smashed open the front of the building on Plummer Street in Port Melbourne early this morning and set fire to a car inside.

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Susler told Today he did not know why the offenders chose to firebomb his newly-opened dealership.

"I know as much as you guys do," Susler said.

"It's not the best, ideal situation… We'll move on from this, we'll get bigger and stronger."

It is understood the dealership had not been previously threatened.

The unknown offenders bypassed a security guard who was hired to protect the building.

Nobody was inside at the time of the attack.

The pair fled the scene before firefighters arrived about 4.50am.

It took 30 firefighters and an aerial unit to control the blaze, which was extinguished by 5.23am.

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The Port Phillip Crime Investigation Unit is now investigating the fire.

Susler opened the Chery dealership on May 1, describing it as the culmination of "countless days of hard work".

"We've poured everything into creating a space you'll love and we couldn't be more proud to welcome you into Australia's biggest Chery showroom," Chery said in a post on Instagram.

It is unknown if the firebombing is linked to a string of similar arson attacks targeting Melbourne nightclubs.

Victoria Police's specialist Operation Eclipse taskforce was established to investigate organised crime groups believed to be responsible for the incidents at hospitality venues in the CBD, South Melbourne and Prahran.

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A billion US dollars of taxpayer money has been set aside to fund Donald Trump's White House ballroom project in a bill to fund immigration enforcement.

In the $97 billion legislation to fund the controversial Immigration and Customs Enforcement (ICE) agency is $1.4 billion for security work related to the renovations of the East Wing.

The funding proposal marks a dramatic shift in cost for Trump's massive overhaul of the White House.

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Several months ago Trump said the renovations would cost $US200 million and be completely funded by private donations.

But the proposed budget would be five times that, with no indication of what is behind the quintupling of the cost.

While officially drafted by Republican senators, the White House has welcomed the funding proposal.

"The White House applauds Congress's latest proposal in its reconciliation package which includes additional funding for security infrastructure upgrades in relation to the long overdue East Wing Modernisation Project," a spokesperson said.

"Congress has rightly recognised the need for these funds."

The funding is "for the purposes of security adjustments and upgrades, including within the perimeter fence of the White House Compound to support enhancements by the United States Secret Service relating to the East Wing Modernisation Project, including above-ground and below-ground security features," the bill reads. 

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The proposed funding has drawn the outrage of Democratic representatives.

"Trump literally said his ballroom would not cost taxpayers a penny. Why are Republicans champing at the bit to fund it?" Congresswoman Sydney Kamlager-Dove said.

"Even if this money is for 'security,' it's $1 BILLION of your tax dollars that wouldn't have been spent if Trump didn't tear down the East Wing."

While the bill has been proposed, it is not certain to become law.

Republicans hold a very narrow margin in both the House of Representatives and in the Senate.

Donald Trump's ballroom and ICE are two of the most unpopular elements of the current administration.

Republicans in narrowly-held districts will be loath to fund both of them six months before the midterm election.

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