TYCOONS are gearing up to lobby US congressmen over a controversial attempt to ban hi-tech exports to Hong Kong. Three delegations have been invited to observe the workings of Customs control and copyright protection in the SAR. The move is the latest bid by the Better Hongkong Foundation, a body created by leading tycoons to promote Hong Kong's political and business interests. It has good links with mainland officials. Foundation chief executive George Yuen Kam-ho said yesterday the organisation had arranged for 30 United States congressmen and their think-tanks to visit this month. 'We have targeted the think-tanks because they are the advisers and congressmen usually listen to what they say,' Mr Yuen said. The tour will include visits to the border and meetings with Customs and copyright-protection officers. Mr Yuen said it was essential to remove misunderstandings by the US, fostered by the Cox report, otherwise Hong Kong's hi-tech development could be seriously hindered.