"Their e-mail exchange on Nov. 17, 2006, offered little hint of the firestorm that's now fueling talk of Gonzales' resignation and threatens a legal showdown between Congress and the White House.

Congressional Democrats suspect that at least some of the prosecutors were fired because they resisted pressure to go after Democrats or to go easy on Republicans. The House and Senate Judiciary Committees have prepared subpoenas to force public testimony on the matter from current and former White House officials if President Bush refuses to make them available.

Congressional investigators are particularly interested in talking to Rove, Bush's chief political operative. Previously released e-mails show that Rove took an early interest in the plan to fire U.S. attorneys, but the extent of his involvement remains unclear."

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