IA SSB3133

Shields defendants from civil and criminal liability for alleged climate effects caused wholly or partly by greenhouse gas emissions, including from agricultural sources, renewable fuel facilities, and natural sources.

Covers emissions of carbon dioxide, methane, nitrous oxide, hydrofluorocarbons, nitrogen trifluoride, sulfur hexafluoride, and perfluorocarbons.

Allows liability only when a district court finds by clear and convincing evidence that the defendant violated an enforceable statutory emission limit or an express term of an operating, air, or other permit issued by the Iowa DNR or a federal agency like the EPA.

Requires plaintiffs in climate-related lawsuits to specify each greenhouse gas emission at issue and demonstrate unavoidable, identifiable damage directly caused by the defendant's regulatory violation.

Explicitly states the law does not create any new right to bring climate-related civil or criminal actions or establish new judicial remedies for climate impacts.