It's from the homeland securtiy bill. Terrorism is only terrorism if it is against the United States, right?. Any violent crime is now defined as terrorism, whether someone is injured or not.

278
H.L.C.
(2) ACT OF TERRORISM.-(A) The term ''act of terrorism'' means any act that the Secretary deter- mines meets the requirements under subparagraph
(B), as such requirements are further defined and specified by the Secretary.
(B) REQUIREMENTS.-An act meets the requirements of this subparagraph if the act-
(i) is unlawful; 8
(ii) causes harm to a person, property, or entity, in the United States, or in the case of a domestic United States air carrier or a United States-flag vessel (or a vessel based principally in the United States on which United States income tax is paid and whose insurance coverage is subject to regulation in the United States), in or outside the United States; and
(iii) uses or attempts to use instrumentalities, weapons or other methods designed or in- tended to cause mass destruction, injury or other loss to citizens or institutions of the United States.