B. The risk management division shall purchase liability insurance coverage for all local public bodies otherwise participating in the public liability fund for liability arising under and subject to the substantive law of a jurisdiction other than New Mexico, including but not limited to other states, territories and possessions and the United States. The risk management division shall purchase such liability insurance only if the director of the risk management division determines that the coverage offered is satisfactory and available at reasonable cost. If satisfactory coverage is unavailable at reasonable cost, the risk management division may offer a certificate through the public liability fund in limits not to exceed one million dollars ($1,000,000) per occurrence. Any liability insurance shall provide coverage only for amounts in excess of the limits set forth in Section 41-4-19 NMSA 1978. Local public bodies shall obtain excess coverage for such foreign jurisdiction liability by paying into the public liability fund an assessment, determined by the director of the risk management division, based on the cost of the insurance and the risks to be insured. If such insurance is unavailable on a satisfactory basis or at reasonable cost and the risk management division does not provide a certificate or insurance with satisfactory limits, local public bodies shall cover such liability in accordance with Subparagraph (c) of Paragraph (1) of Subsection A of Section 41-4-20 NMSA 1978.