Incredibly, the Obama administration thinks Mr. Mukasey did not go far enough. Charlie Savage reported in The Times last week that the F.B.I plans to issue a new edition of its operational manual that will give agents significant new powers to search law enforcement and private databases, go through household trash or deploy surveillance teams, with even fewer checks against abuse.

Take, for example, the lowest category of investigations, called an “assessment.” The category was created as part of Mr. Mukasey’s revisions to allow agents to look into people and groups “proactively” where there is no evidence tying them to possible criminal or terrorist activity. Under the new rules, agents will be allowed to search databases without making a record about it. Once an assessment has started, agents will be permitted to conduct lie detector tests and search people’s trash as part of evaluating a potential informant. No factual basis for suspecting them of wrongdoing will be necessary.

The F.B.I. general counsel, Valerie Caproni, said agents want to be able to use the information found in a subject’s trash to pressure that person to assist in a government investigation. Um, well, yes, that is the problem. It only heightens concern about privacy, improper squeezing of individuals, and the adequacy of supervision.

Currently, surveillance squads, which are trained to surreptitiously follow targets, may be used only once during an assessment. The new rules will allow repeated use.

They also expand the special rules covering “undisclosed participation” in an organization by an F.B.I. agent or informant. The current rules are not public, and, as things stand they still won’t be. But we do know the changes allow an agent or informant to surreptitiously attend up to five meetings of a group before the rules for undisclosed participation — whatever they are — kick in.