For the purposes of this subchapter:

(1) The term “strategic and critical materials” means materials that (A) would be needed to supply the military, industrial, and essential civilian needs of the United States during a national emergency, and (B) are not found or produced in the United States in sufficient quantities to meet such need.

(2) The term “national emergency” means a general declaration of emergency with respect to the national defense made by the President or by the Congress.

(June 7, 1939, ch. 190, § 12, as added Pub. L. 96–41, § 2(a), July 30, 1979, 93 Stat. 324.)