Foreign intelligence information — Law Dictionary

50 U.S.C. § 1801 — as used in this subchapter (3 versions over time)

“Foreign intelligence information” means—

(1) information that relates to, and if concerning a United States person is necessary to, the ability of the United States to protect against—

(A) actual or potential attack or other grave hostile acts of a foreign power or an agent of a foreign power;

(B) sabotage, international terrorism, or the international proliferation of weapons of mass destruction by a foreign power or an agent of a foreign power;

(C) clandestine intelligence activities by an intelligence service or network of a foreign power or by an agent of a foreign power; or

(D) international production, distribution, or financing of illicit synthetic drugs, opioids, cocaine, or other drugs driving overdose deaths, or precursors of any aforementioned; or

(2) information with respect to a foreign power or foreign territory that relates to, and if concerning a United States person is necessary to—

(A) the national defense or the security of the United States; or

(B) the conduct of the foreign affairs of the United States.

50 U.S.C. § 403 — in this section

In this section, the term “foreign intelligence information” means—

(A) information, whether or not concerning a United States person, that relates to the ability of the United States to protect against—

(i) actual or potential attack or other grave hostile acts of a foreign power or an agent of a foreign power;

(ii) sabotage or international terrorism by a foreign power or an agent of a foreign power; or

(iii) clandestine intelligence activities by an intelligence service or network of a foreign power or by an agent of a foreign power; or

(B) information, whether or not concerning a United States person, with respect to a foreign power or foreign territory that relates to—

(i) the national defense or the security of the United States; or

(ii) the conduct of the foreign affairs of the United States.