Both the substantive delegation of regulatory power to the agency and the grant of investigative authority may be drafted in such broad terms that the reviewing court will find it difficult to conclude that the investigation is ultra vires.

• 对机关管理权力的实体授权以及授予调查权都可能是以广义的措词拟定的，复审法院因而感到难以得出调查属越权行为的结论。