New legislation in Australia could see more 501s deported to New Zealand.
The government is trying to toughen rules and loopholes, making it harder to fight and stay in Australia.
On Christmas Island, inside an Australian detention centre cell, the door opens and a unified line of armoured guards storm through - aggressively wrestling a detainee.
Equally as combative, but using his words was Australian Prime Minister Scott Morrison in Parliament.
"I began the process of strengthening our laws," he declared.
Morrison wants more power to detain and deport more people.
"There is a loophole where a judge hands down a sentence lower than two years and can get off when it comes to having their visa cancelled and being deported," he said.
Australia's government has been fighting to close those loopholes, making it easier to deport and near impossible to appeal.
"Labor and the Greens have been denying us this change for last 1200 days," Morrison said.
Among the thousands deported for low-level crimes, more than 2000 are Kiwi-born - often raised in Australia.
Filipa Payne, an advocate for 501s, says if the law passes tomorrow it will be detrimental.
"Absolutely this means more people will be deported," she says.
"Any government agency can acquire information about you and not tell you that information. That means they can make allegations against you without telling you or without you defending yourself or proving your innocence."
The changes failed to pass last year.
"This is a scary scary step if Australia's legislation passes through this time," Payne says.
The government will try for a second time on Wednesday.
