The Muslim community in NZ was probed by US diplomats for signs of extremist behaviour.

Former PM Helen Clark says concerns by the US Embassy over the screening of Michael Moore's film Fahrenheit 9/11 for a Labour Party fundraising event showed "outright bullying" and "unprofessional" conduct by officials.

Former United States Ambassador Charles Swindells got the job because he was a Republican Party funder so did not understand diplomacy, and as a result fed wrong information about New Zealand to his Government, Labour leader Phil Goff says.