A sociologist warns we should refrain from comparing our immigration with overseas.

Prime Minister Chris Luxon's pointed the finger at immigration - for driving lower social cohesion and trust in institutions worldwide.

He's indicated National will say more on the topic ahead of the election.

But Massey University's Paul Spoonley says it's worth having a debate about our settings - but we need skilled migrants.

"We should not compare our immigration system to what's happening in Europe, it's completely different. They have a large number of refugees and asylum seekers, we do not."

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