Title 50 › Chapter CHAPTER 55— - DEFENSE PRODUCTION › Subchapter SUBCHAPTER III— - GENERAL PROVISIONS › § 4552
Gives simple meanings for words used in this chapter about defense industry and national security. A "critical component" means parts, subsystems, tools, or test gear needed to make, fix, keep, or operate weapons or other equipment the President says are vital to national security; items found critical in a National Security Assessment under 10 U.S.C. 113(i) or by a Presidential finding after a petition under 19 U.S.C. 1862 are treated as critical unless the President decides they are not. "Critical infrastructure" means physical or cyber systems so important that their loss would seriously hurt national security, the economy, or public health and safety. "Critical technology" is any technology the President marks as essential to defense. A "critical technology item" is material that uses or comes from a critical technology. A "defense contractor" is anyone who contracts with the U.S. to supply materials, industrial resources, or critical technology for defense, or to do defense services. The "domestic industrial base" is U.S. sources that provide or are expected to provide materials or services for defense in peace, emergency, or war. A "domestic source" normally does almost all R&D, engineering, manufacturing, and production in the U.S. or Canada and buys components from similar firms; for subchapter II, Australia or the United Kingdom may count too under limits described in the law, and “national defense matter” is defined by 10 U.S.C. 301 or 50 U.S.C. 98h–1(f). "Facilities" covers buildings and other property improvements (not farms, places of worship, or private homes) and services to use them. A "foreign source" is any business that is not a domestic source. A "guaranteeing agency" is a U.S. department or agency that buys for national defense. "Homeland security" means preventing, reducing vulnerability to, limiting damage from, and recovering from terrorist attacks. "Industrial resources" are the materials, services, processes, or equipment (and their supporting tech and services) needed for a modern defense industrial base. "Materials" include raw materials, parts (including critical components), products, supply items, and related technical information or services. "National defense" covers military and energy production or construction, defense or critical infrastructure aid to other nations, homeland security, stockpiling, space, and directly related activities, and it includes emergency preparedness under title VI of the Stafford Act (42 U.S.C. 5195 et seq.) and critical infrastructure protection and restoration. "Person" means an individual, company, group, legal successor or representative, or any State or local government or agency. "Services" means efforts tied to making, using, moving, or building industrial resources or critical tech items, or other defense programs. A "small business concern" is a business that meets section 632(a) of title 15 and its regulations, including those owned by socially and economically disadvantaged individuals or by women.
Full Legal Text
War and National Defense — Source: USLM XML via OLRC
Legislative History
Reference
Citation
50 U.S.C. § 4552
Title 50 — War and National Defense
Last Updated
Apr 6, 2026
Release point: 119-73