A key snippet from today's piece in The Hill about the DeLay portion of the Abramoff investigation ...

One source familiar with the investigation said federal officials have given immunity to at least one senior member of DeLay’s political circle who may now be cooperating with investigators. Former associates of the majority leader say investigators are apparently attempting to indict DeLay for corruption by proving that Buckham sought to influence him with unearned payments to his wife.

That circle isn't that big. Especially when you take out the folks who've already pleaded out. Any ideas?