Peter Wilson: The Week in Politics - Labour's Auckland Harbour tunnel plan, National's cellphone ban

An ambitious and vastly expensive tunnel proposal for Auckland Harbour, a $2 billion international fund for New Zealand's renewable energy projects, the latest poll shows NZ First with enough support to get back into Parliament and the hottest topic of the week: National's policy to ban cellphones in schools.

It was a simple announcement by National Party leader Christopher Luxon that created the most controversy this week.