Conservative groups are honing in on an attack plan to rebuff billionaire climate activist Tom Steyer‘s foray into a handful of Senate and gubernatorial races.

At issue are Steyer’s alleged dealings in Indonesian coal when he ran his former hedge fund, Farallon Capital Management. Conservative outfits want to turn Steyer’s suggestion that his policies aren’t aligned with his pocketbook — a defense Steyer and his environmental and Democratic allies make to parry accusations that he is a liberal version of the Koch brothers — on its face.