((a)) ** Authorization and establishment** To carry out the purposes of this chapter, the Administrator of the Federal Emergency Management Agency is authorized to establish and carry out a national flood insurance program which will enable interested persons to purchase insurance against loss resulting from physical damage to or loss of real property or personal property related thereto arising from any flood occurring in the United States.

((b)) ** Additional coverage for compliance with land use and control measures** The national flood insurance program established pursuant to subsection (a) shall enable the purchase of insurance to cover the cost of implementing measures that are consistent with land use and control measures established by the community under for—

((1)) properties that are repetitive loss structures;

((2)) properties that are substantially damaged structures;

((3)) properties that have sustained flood damage on multiple occasions, if the Administrator determines that it is cost-effective and in the best interests of the National Flood Insurance Fund to require the implementation of such measures; and

((4)) properties for which an offer of mitigation assistance is made under—

((A)) (Flood Mitigation Assistance Program);

((B)) the Hazard Mitigation Grant Program authorized under ;

((C)) the Predisaster Hazard Mitigation Program under ; and

((D)) any programs authorized or for which funds are appropriated to address any unmet needs or for which supplemental funds are made available.

((c)) ** Participation and risk sharing by insurers** In carrying out the flood insurance program the Administrator shall, to the maximum extent practicable, encourage and arrange for—

((1)) appropriate financial participation and risk sharing in the program by insurance companies and other insurers, and

((2)) other appropriate participation, on other than a risk-sharing basis, by insurance companies and other insurers, insurance agents and brokers, and insurance adjustment organizations,