Part O – Registration
- Chapter 1 – Presumption of Lawful Admission
- Chapter 2 – Presumption of Lawful Admission Despite Certain Errors Occurring at Entry
- Chapter 3 – Children Born in the United States to Accredited Diplomats
- Chapter 4 – Aliens Who Entered the United States Prior to January 1, 1972
- Chapter 5 – Other Special Laws