50 U.S.C. § 1885(1) (2010) (Title 50—Chapter 36: Foreign Intelligence Surveillance—Subchapter G: Protection of Persons Assisting the Government)
Assistance. The term "assistance" means the provision of, or the provision of access to, information (including communication contents, communications records, or other information relating to a customer or communication), facilities, or another form of assistance.
28 CFR § 65.81 [28 CFR PART 65—EMERGENCY FEDERAL LAW ENFORCEMENT ASSISTANCE: SUBPART I—Immigration Emergency Fund]
As used in this part:
means any actions taken by a State or local government directly relating to aiding the Attorney General in the administration of the immigration laws of the United States and in meeting urgent demands arising from the presence of aliens in the State or local government's jurisdiction, when such actions are taken to assist in meeting an immigration emergency or under any of the circumstances specified in section 404(b)(2)(A) of the INA. Assistance may include, but need not be limited to, the provision of large shelter facilities for the housing and screening of aliens, and, in connection with these activities, the provision of such basic necessities as food, water clothing, and health care.