Chapter 113B of Title 18 of the US Code defines Terrorism, outlines the various related criminal activities included under that heading, and the relevant penalties.
Section 2331(5) of Chapter 113B defines “domestic terrorism”:
(5) the term “domestic terrorism” means activities that—
(A) involve acts dangerous to human life that are a violation of the criminal laws of the United States or of any State;
(B) appear to be intended—
– (i) to intimidate or coerce a civilian population;
– (ii) to influence the policy of a government by intimidation or coercion; or
– (iii) to affect the conduct of a government by mass destruction, assassination, or kidnapping; and(C) occur primarily within the territorial jurisdiction of the United States…
Respond to Domestic terrorism – as defined in US Federal law