To most Americans, Mr. Buckley suggests, the main concern in matters of law enforcement is the ability of "the police, or more accurately the entire court system, to keep down the rate of crime, or to prevent it from growing." To civil-libertarians like Mr. Chevigny, a far greater concern is police going too far, and specifically bending new rules intended to check their power, such as the exclusionary rule. In this discussion rich with anecdote, Mr. Heffernan stoutly defends his colleagues: "I think ... they're doing everything in their power to comply with the laws of the land, as much as we do it sometimes with a frown on our face ..."