Siegelman sicced a Mobile law firm on big oil in 1999, and the Boeing/EADS battle didn't pick up major steam until about 2001. The gun issue and Charlton Heston did not become known until just before the 2002 election.
It's not enough for big oil to screw consumers at the pumps every summer. It also wants to defraud states out of the true value for their mineral rights. Could Alabama have used that $3.5 billion? It sure could have--for better schools, roads and bridges, health care, you name it.
Don Siegelman was fighting for that, and our guess is, that's why big oil decided he had to be stopped.