National's questioning the timing of Labour's amnesty policy. 

It's pledging to provide a one-off visa for overstayers who have been in the country for more than a decade. 

Labour leader Chris Hipkins says it's about providing residence to dawn raid survivors, and could cover up to 20 thousand people. 

National Immigration Spokesperson Erica Stanford told Mike Hosking that our borders are currently compromised. 

She says we haven't been doing the right checks of people at the border, so people will be getting the message they'll be okay if they stay long enough. 

LISTEN ABOVE