The entire contretemps at the White House this week centers on whether Mr. Rove tried to discredit Mr. Wilson by suggesting that his mission to Niger was the product of nepotism, and that Ms. Wilson had arranged for it. Why a mission to Niger would be such a plum assignment is still a mystery, but the Senate Intelligence Committee, in a report last year, quotes a State Department official as saying that Ms. Wilson had suggested sending her husband. She denies it.