Māori Party justice spokesperson Rāhui Katene says Crown Law should explain why it advised the police not to prosecute an officer who'd been texting before a fatal crash.
Rawiri Wilson, 16, was hit by the police car as he walked along State Highway 1, near Ohaeawai, about midnight on 25 July 2009.
The use of cellphones while driving was not an offence at the time.
Ms Katene, a lawyer, says civilian drivers have been prosecuted for less. She says she remembers a case where a woman was charged with careless driving after she sneezed and hit a pedestrian.
Ms Katene says the Rawiri Wilson case has left many Māori with the impression that there's one law for them and another for the police.
She says an explanation from Crown Law of its reasoning would address that perception.