For twenty years. That counts as his retirement more than got caught.
He likely dropped a dime on himself when she just wouldn't die already.
He told his wife it was going to be a six year gig, twelve at most, eighteen was unthinkable, oh hell her checkup was good, this rat poison in her bourbon is making her stronger, hello FBI? I've been driving a senator for 20 fucking years and need to get back home to china before my grandkid is deployed to Taiwan.