Appendix to opinion of Breyer, J.
"(V) The use of any—
"(a) biological agent, chemical agent, or nuclear weapon or device, or
"(b) explosive, firearm, or other weapon or dangerous device (other than for mere personal monetary gain),
"with intent to endanger, directly or indirectly, the safety of one or more individuals or to cause substantial damage to property.
"(VI) A threat, attempt, or conspiracy to do any of the foregoing.
"(iv) ‘Engage in terrorist activity’ defined
"As used in this chapter, the term ‘engage in terrorist activity’ means, in an individual capacity or as a member of an organization—
"(I) to commit or to incite to commit, under circumstances indicating an intention to cause death or serious bodily injury, a terrorist activity;
"(II) to prepare or plan a terrorist activity;
"(III) to gather information on potential targets for terrorist activity;
"(IV) to solicit funds or other things of value for—
"(aa) a terrorist activity;
"(bb) a terrorist organization described in clause (vi)(I) or (vi)(II); or
"(cc) a terrorist organization described in clause (vi)(III), unless the solicitor can demonstrate by clear and convincing evidence that he did not know, and should not reasonably have known, that the organization was a terrorist organization;
"(V) to solicit any individual—
"(aa) to engage in conduct otherwise described in this subsection;
"(bb) for membership in a terrorist organization described in clause (vi)(I) or (vi)(II); or
"(cc) for membership in a terrorist organization
