No WMD, but we're still holding those scientists

Congress allotted hundreds of millions of dollars for the weapons hunt, and there has been no public accounting of the money. A spokesman for the Pentagon's Defense Intelligence Agency said the entire budget and the expenditures would remain classified.

[...]

[A] small group of Iraqi scientists still in U.S. military custody are not being held in connection with weapons investigations [...]

Three people involved with the ISG said the weapons teams made several pleas to the Pentagon to release the scientists, who have been interviewed extensively. All three officials specifically mentioned Gen. Amir Saadi, who was a liaison between Hussein's government and U.N. inspectors; Rihab Taha, a biologist nicknamed "Dr. Germ" years ago by U.N. inspectors; her husband, Amir Rashid, the former oil minister; and Huda Amash, a biologist whose extensive dealings with U.N. inspectors earned her the nickname "Mrs. Anthrax."

None of the scientists has been involved in weapons programs since the 1991 Gulf War, the ISG determined more than a year ago, and all have cooperated with investigators despite nearly two years of jail time without charges. U.S. officials previously said they were being held because their denials of ongoing weapons programs were presumed to be lies; now, they say the scientists are being held in connection with the possible war crimes trials of Iraqis.

  WaPo article

And if that doesn't pan out, we are experienced in changing the reasons for our actions. That's the easy part.