A new policy aimed at attracting more migrants to Northland would achieve nothing, warned the Government's lead economic adviser.
According to documents released under the Official Information Act, Treasury told Finance Minister Bill English on July 16 the new Government measures aimed at getting migrants to the regions were unlikely to help regional development.
The measures went to Cabinet for approval on July 20 and the increased bonus points on residency requests was announced on July 26.
Under the revised scheme, skilled workers who take jobs in the regions or set up businesses there will get more points for their residency applications.
Pressed on how many migrants might be attracted by the policy change, Prime Minister John Key said: "We can't tell you exactly up front. It will make it certainly more attractive, I don't know the exact numbers. I do know there is capacity in the regions, that there is demand in the regions, and we've seen migration flows be very successful there."