The Opposition's open to suggestions as a US detective gives guidance on how to deal with unruly gangs. 

Politicians are at loggerheads over what to do with escalating gang violence. 

Newly minted Police Minster Chris Hipkins has hinted at a crackdown, with a package to be announced in the coming weeks.

It's while National calls for the banning of gang insignia and anti-consorting laws similar to those in Australia. 

Redwood City Detective Sergant Nick Perna has another suggestion. 

He says in California, they have a 'gang enhancement' charge -- which can be tacked on to any conviction where Police can prove it was done to benefit a gang. 

“If you can prove conspiracy of three or more gang members committing a crime together, instead of getting five years - with a gang enhancement it could end up being ten years in prison” he said. 

“In a drive by shooting -- you have a driver, shooter, and a third who's directing it or another shooter -- they'd all be charged with attempted murder or murder, whatever the case may be.”

“You can even connect people before and after the fact. If someone provided them with a weapon to go do the shooting, they could be charged with a gang enhancement.”

In New Zealand, if the offender is part of an organised criminal group, it could be considered an aggravating factor at sentencing.

But, the final sentence is limited to the maximum penalty prescribed for the offence.

For example, the maximum imprisonment someone can face for robbery is ten years.

A gang enhancement would mean if a robbery is determined to have benefitted a gang, the final sentence could go beyond a decade.

While National wants more tools for cops, the banning of gang insignia and three strikes law retained -- the party’s justice spokesperson Paul Goldsmith says they're open to looking at other legal options. 

"We won't discount anything if it makes our communities safer in the end,” he said.

"We haven't considered longer sentences for gang members at the moment but let's not rule anything out at this stage.”

Goldsmith is reeling at the prospect of the Three Strikes legislation being repealed, saying it’s out of touch and doesn’t make any sense. 

“the Government has looked at increased violent crime and has come to the conclusion that the main problem is that we are too tough on our worst offenders.”

Meanwhile, ** Alexander Gillespie wants law and order to stop being a political football.

“People want to come up with these magic bullets. There is no magic bullet though because this is something that’s been going on for over a century.”

“You want is a cross-party initiative whereby we come together, we define the problem, we set the indicators of how we're going to deal with that then we apply the resources.”