No such dispensation has been granted to the player because none is required.
While a 2014 World Rugby Regulations Committee hearing determined that a breach of Regulation 8 had occurred as Pulu was not eligible for Niue, under the regulation as it was at the time, it was the union, not the player, who was culpable for any breach.
The union was therefore sanctioned and the player deemed not to be captured by Niue. The regulation has since been reformed to apply joint culpability for union and player, but it is not retrospectively applied.
Therefore, subject to meeting current eligibility criteria set out under Regulation 8, Pulu is free to represent a nation for which he has a close and credible link.
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Americas Rugby Championship 2018 - Round 5
CHILE v CANADA: 17-33
URUGUAY v USA: 19-61
BRAZIL v ARGENTINA XV: 8-28