New Zealand’s genetic modification laws could be threatened as part of the Trans Pacific Partnership agreement, the Sustainability Council warns, and it wants assurances they wont be weakened. The broad outlines of the agreement are due to be unveiled by President Barack Obama at the Apec summit this weekend in Honolulu. [...] the Government is keeping its negotiating position confidential with Trade Minister Tim Groser admitting this week that the “tough stuff” had yet to be negotiated.