Australia's conservative minority government suffered a monumental political defeat on Tuesday, becoming the first administration in almost a century to lose a vote on major legislation and fuelling calls for a snap election.
With the constitutional issue no longer relevant, the coalition avoided a potentially disastrous defeat on an appropriation bill.
New laws making it easier for asylum seekers to receive medical treatment passed parliament on Tuesday afternoon, despite heavy pushback from the government.
"If the bill actually gets passed against the wishes of the government, that would be an indication that the government has lost control over the finances of the country", Twomey told Sky News.
Before the bill was considered Speaker Tony Smith tabled correspondence from Attorney-General Christian Porter saying the bill, passed by the Senate a year ago, contravened the constitution's Section 53.
The coalition tried to derail the Labor amendments to the bill at the last minute, arguing the laws were unconstitutional.More news: Heavy snow in Metro Vancouver, Vancouver Island causes travel woes
Despite days of pressure from the Government, Labor was backed by six crossbench MPs to inflict a series of procedural defeats on the Government, culminating in the passage of the legislation tonight.
"Our opponents have plans that will make Australia weaker, to weaken the economy, to weaken our borders", Mr Morrison said.
'Tonight Labor have demonstrated again they just don't understand how to protect Australia's borders'.
Mr Morrison told Parliament the legislation, although meant to be humanitarian, was likely to lead to the return of people smugglers on the water in Australia's north. "Every [boat] arrival is on Bill Shorten's head".
He also took to social media after a press conference to say that Mr Shorten didn't care about the Australian borders.
Opposite Leader bill Shorten. "This bill and the amendments are about character", Shorten told the House.More news: Nicki Minaj Cancels BET Concert After Cardi B Grammys Tweet
The amendments agreed between Labor and the crossbench widen the discretion of the home affairs minister to stop medical transfers if asylum seekers pose a security risk or have serious criminal records.
The package also gives ministers 72 hours to make decisions, rather than the original proposal of 24 hours.
Labor and the crossbench MPs who voted with it are claiming a moral victory because the parliamentary vote was created to improve medical treatment of asylum seekers on Nauru and Manus Island.
Morrison declared the defeat, which he said he had anticipated, was not a de facto motion of no confidence in the government, and he was confident the independents would continue to support the government.
However, he ruled out going to an election - telling reporters the federal election would be "in May, after the Budget".More news: Missouri prison nurse fatally poisons husband to marry (life) inmate lover