---
kind: "unit"
title: "50"
title_heading: "War and National Defense"
key: "ch36"
level: "chapter"
label: "Chapter 36"
heading: "Foreign Intelligence Surveillance"
release: "119-102"
url: "https://uscodex.org/usc/50/ch36"
sections_count: 51
---

# Chapter 36 — Foreign Intelligence Surveillance

Title 50 — War and National Defense

## Contents

- [Subchapter I — Electronic Surveillance](/usc/50/ch36-schI.md)
- [Subchapter II — Physical Searches](/usc/50/ch36-schII.md)
- [Subchapter III — Pen Registers and Trap and Trace Devices for Foreign Intelligence Purposes](/usc/50/ch36-schIII.md)
- [Subchapter IV — Access to Certain Business Records for Foreign Intelligence Purposes](/usc/50/ch36-schIV.md)
- [Subchapter V — Oversight](/usc/50/ch36-schV.md)
- [Subchapter VI — Additional Procedures Regarding Certain Persons Outside the United States](/usc/50/ch36-schVI.md)
- [Subchapter VII — Protection of Persons Assisting the Government](/usc/50/ch36-schVII.md)