Tempting fate: A torrent of doubtsProject backers expect electricity, water and flood protection, but critics call it pie-in-the-skyBy Matt Weiser -- Bee Staff Writer Published 2:15 am PST Sunday, February 19, 2006 American taxpayers have had an unsteady relationship with the Auburn dam: $400 million spent so far on a dam that was never built; another $30 million through the end of this year to restore the former construction site; and now $1 million more to study whether to build the dam after all. Since Hurricane Katrina swamped New Orleans, Auburn dam supporters have rallied behind the project anew, suggesting...