This article examines the impact of full sex history polygraph testing for sex offenders in light of the United States v. Antelope (2005) ruling. It provides a review of the facts of the Antelope case, along with a general overview of the U.S. legal system. Discussion includes the appellate process, case law, and precedent and how court decisions impact lower courts in the same geographic region and beyond. The specific decision making process of the Ninth Circuit Court of Appeals in Antelope is examined as it relates to McKune v. Lile (2002). There are new laws that impact treatment and child abuse reporting that serve to complicate matters. Recommendations include legislative changes and immunity contracts within the context of their limitations.