[2][need quotation to verify] The explanatory notes to the "Wanganui District Council (Prohibition of Gang Insignia) Bill", a local bill introduced into the New Zealand Parliament by then Whanganui MP Chester Borrows, records that the Wanganui District Council already had an informal policy that prohibited wearing or displaying gang insignia in public buildings.
[3][4][5][6] The bill received Royal Assent on 9 May 2009 and came into force the next day as the Wanganui District Council (Prohibition of Gang Insignia) Act 2009.
[7][8] Wanganui District Council then passed bylaws banning the wearing of gang insignia, or patches and similar symbols, within parts of their jurisdiction.
[11] On 28 June 2012, Rotorua MP Todd McClay, introduced the "Prohibition of Gang Insignia in Government Premises Bill" into the New Zealand Parliament.
[13] The bill, which had very similar provisions to the Wanganui District Council's by-law, received Royal assent on 12 August 2013 and became law as the Prohibition of Gang Insignia in Government Premises Act 2013.