Occasionally this trust is abused. But during the last half century, the federal government has played an increasingly important role in insisting on clean dealing and unambiguous language.

• 偶尔也有所托非人的时候，但最近50年来，联邦政府始终强调行为要廉洁，语言要坦诚，政府在这方面发挥着越来越重要的作用。