Beehive Buzz: Jason Walls on outgoing Treasury boss recommending capital gains tax and Darleen Tana's future

Outgoing Treasury boss Caralee McLeish has recommended New Zealand adopt a capital gains tax - and has also said we need to look at changing our superannuation settings as our population ages.  So could it return to the political agenda?  And Darleen Tana has taken her battle to remain an MP to the courts - how does this legal challenge work?  Newstalk ZB political editor Jason Walls joined Nick Mills with the latest.  LISTEN ABOVESee omnystudio.com/listener for privacy information.