Project Summary: (Discussion Board Post) Hall, Daniel E. (2023). Criminal law and procedure (8th ed.). Cengage Chapter 8: Factual and Statutory Defenses Chapter 9: Constitutional Defenses To satisfy the elements of a particular crime, both the actus reus and mens rea must be proven. Often times, defendants admit the actus reus, but deny the concept of mens rea. They often do this through the use of defenses based on excuse. Infancy Mistake Alibi and Consent Intoxication Entrapment Statutes of Limitation