The Prime Minister believes the United States' tariff hike of 15 percent was a blunt and late decision.

The US announced the increase for New Zealand exporters, while the UK and Australia remain at 10 percent.

Trade Minister Todd McClay's been invited by his US counterpart to visit and discuss the tariffs.

NZ Herald political reporter Adam Pearse says it's expected McClay will make the trip in the next two weeks.

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