John Key went to meet Hollywood bosses with a briefing from officials saying studio bosses were looking for easier ways to target New Zealanders who downloaded and shared films illegally.
Officials told the Prime Minister Hollywood objected to the $25 fee it had to pay each time a notice warning against copyright infringement was issued and wanted to pay less.
Mr Key's trip to Hollywood came amid political heat over the Kim Dotcom case. An accused internet pirate, Mr Dotcom is facing extradition on charges of criminal copyright violation after an FBI investigation.
He has claimed the case was motivated by the Motion Picture Association of America, the lobby group representing the main studios.
Mr Key's briefing from officials described the MPAA as "highly influential in Washington political circles". He was told its influence meant the group had "played a key role in shaping US trade policy to suit its particular interests".