A bill for an act relating to interpretation of law in administrative and judicial proceedings under the Iowa administrative procedure Act.

This bill amends Iowa's administrative procedure act to change how courts interpret laws in cases involving state agencies. It requires courts to interpret statutes and agency rules "de novo" (from scratch) instead of deferring to an agency's interpretation. The bill also mandates that when courts face uncertainty, they must favor interpretations that limit agency authority. This directly affects courts, agencies, and individuals or entities challenging agency decisions under Iowa law.