By J. Michael Waller © 2003 Insight/News World Communications Inc. It's one of the unsolved political mysteries of 2003: Exactly who drew up the plan for Democrats to abuse the Senate Select Committee on Intelligence, or SCCI, as a stealth weapon to undermine and discredit President George W. Bush and the U.S. war effort in Iraq? The plot, authored by aides to Sen. Jay Rockefeller, D-W.Va., vice chairman of the committee, has poisoned the working atmosphere of a crucial legislative panel in a time of war, Senate sources say. It centered on duping the panel's Republican chairman, Sen. Pat Roberts...