Actually, it wasn't bad intelligence. It was cherry-picked intelligence, even faked, and designed to mislead politicians and the public into believing, among other things, that Iraq was actively developing a nuclear weapon.

Politicized intelligence may be at work once again. On August 5, a Bloomberg column ("Iran Already Sanitizing Nuclear Site, Intel Warns") by Josh Rogin and Eli Lake reported that the "U.S. intelligence community" had informed Congress of "evidence that Iran was sanitizing its suspected military site at Parchin, in broad daylight, days after agreeing to a nuclear deal with world powers." The column cited an August 3 briefing to the Senate Intelligence Committee by the Office of the Director of National Intelligence (ODNI) that disclosed "satellite imagery picked up by U.S. government assets in mid- and late July show[ing] that Iran had moved bulldozers and heavy machinery to the Parchin site."