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.