Groups like the conservative Building Industry Association of Washington have historically skimmed 20 percent off the top of the refunds for political purposes—funding, for example, a campaign on behalf of Republican gubernatorial challenger Dino Rossi in 2008. Additionally, miscalculations by the state resulted in more than $100 million in over-payments to high-risk “retro” groups. “Retro reform” measures would put an end to both practices