The Green Party is raising questions about whether anything was promised in exchange for the $150,000 given to the National Party by a Chinese-owned company.
And it says its yet another reason to ban political donations from foreigners.
In 2016 the National Party got the money from the Inner Mongolia Rider Horse Industry which is a New Zealand registered company owned by Chinese billionaire, Lang Lin.
At the time National's Todd McClay did meet Mr Lang in his capacity as Trade Minister, but he denies there were any inappropriate discussions about donations at those official meetings.
He says in his capacity as a National MP he had another meeting with Mr Lang and that is when the financial support was offered and he says the subsequent donation was legal.
Green Party Justice Spokesperson Golriz Ghahraman, has a members bill that would ban all foreign donations and cap political donations at $35,000. She says the "system" lacks transparency.
