Deputy Prime Minister Winston Peters doesn't feel the Greens are doing all they can in regard to Darleen Tana. 

The Green Party's asked Tana to resign from parliament after receiving the investigation into alleged migrant exploitation at her husband's business. 

Tana doesn't accept the findings, claiming it substantially misrepresents her level of involvement in the business. 

She's resigned from the party, but not yet Parliament. 

Peters says they could expel Tana, utilising the waka-jumping legislation and forcing her to step down as MP. 

Senior Political Correspondent Barry Soper told Kerre Woodham that the Greens should "eat humble pie" and get rid of her through the legislation they’re vehemently opposed to. 

He said that there’s no way that she’s going to make one iota of difference to the votes in parliament. 

Soper said that if Darleen Tana stays on, it shows that the money is of more interest to her than what is democracy. 

LISTEN ABOVE 

• "This is a disgrace": Peters reacts to the Darleen Tana scandal, waka-jumping showdown
• 'She misled us': Darleen Tana revelations have Greens calling for resignation
• Darleen Tana 'holds the cards', plans to stick around as MP