Rosabeth Moss Kanter

Tribalism reflects strong ethnic or cultural identities that separate members of one group from another, making them loyal to people like them and suspicious of outsiders, which undermines efforts to forge common cause across groups.

That D.C. grand jury investigation of Abramoff can't go on forever. Eventually the lawyers at the Public Integrity Section will go to their bosses with some decisions about just who they want to indict. That's when Al Gonzales will have to show his cards.