Jacinda Ardern should get off Australia's back about its treatment of refugees and asylum seekers on Manus Island, Gerry Brownlee says.
National's foreign affairs spokesman accused the Prime Minister of continuing to interfere in Australia's domestic politics and trying to embarrass Australia into accepting New Zealand's offer to take 150 people from Manus Island and Nauru.
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Ms Ardern was expected to have raised the offer again on Saturday at a dinner with Australian opposition leader Bill Shorten.
"While we should always be able to speak frankly and raise concerns, Ms Ardern should be giving more consideration to the difficulty of dealing with issues like asylum seekers, and asking herself whether her approach is in the best interests of New Zealand and New Zealanders," Mr Brownlee said on Monday.
Australia's Senate passed a motion last month urging the government to accept the offer.
The government embarrassingly lost a vote on the motion in the House of Representatives after two of its MPs missed the division.
A second vote moments later succeeded in defeating the motion.