The federal opposition is pushing to flush out an ACT law that decriminalises hard drugs.
The ACT's decriminalisation policy provides police with the option to issue those found with small quantities of drugs a fine or divert them towards health services, instead of charging them and putting them through the criminal justice system.
It does not legalise the consumption or sale of any illicit drug.
Opposition Leader Peter Dutton said it would still end up "luring drug users into Canberra".
"That'll be the tourism attraction for people coming from all over the country," he told Sydney radio 2GB on Thursday.
The former Queensland police officer said the policy would not help reduce crime in the ACT.
"I've delivered death messages to parents whose kids have died of overdoses, I've been to countless domestic violence incidents where blokes are as high as a kite and they commit crimes they wouldn't otherwise," Mr Dutton said.
Shadow attorney-general Michaelia Cash on Thursday introduced a private senators' bill to overturn the law.
However, the bill will not pass because it does not have the support of the government, Greens and parts of the crossbench.
ACT Labor backbencher Michael Pettersson spearheaded the push to decriminalise cannabis in the territory before moving subsequent legislation to include small quantities of harder drugs such as heroin, ice, cocaine, MDMA and psychedelics.
He hit back at suggestions that the laws would increase drug use, saying "diversion, access to treatment and rehabilitation are the best ways to reduce the harms that drugs cause in our community".
"No amount of right-wing scaremongering will change that," Mr Pettersson told AAP.
ACT Greens drug harm minimisation spokesman Johnathan Davis said people were dying under the status quo, and it was failing to treat addictions and clogging up prisons with people caught with minor amounts of drugs.
ACT Attorney-General Shane Rattenbury said the decriminalisation of cannabis had taken pressure off law enforcement and the criminal justice system as people caught with small quantities didn't need to be arrested, charged and processed.
"We want to treat people from a health point of view rather than a criminal justice point of view," he said.
Chief Minister Andrew Barr also slammed the coalition for pushing to override laws in the ACT, after a separate bill sought to overturn legislation that allowed the territory government to compulsorily acquire Calvary Hospital in the city's north.
Mr Barr said the push was "political posturing" from the Liberals who were simply "throwing some red meat to the base".
ACT independent senator David Pocock said it was disappointing to see federal politicians trying to interfere with the territory's democratically elected government, as did ACT opposition leader Elizabeth Lee despite not agreeing with the actual laws.
The laws come into effect in the ACT at the end of October.
