(A) In general At the discretion of the Secretary, or at the request of the Governor of an affected State, an appropriate Federal official shall determine whether a coral event is an event of national significance. (B) Considerations In making a determination under paragraph (1), the appropriate Federal official shall consider the severity of the event or disease outbreak or bleaching, its potential to spread, the economic impact, and the geographic scope, including the potential to affect several municipalities, to affect more than one State, or to cross an international boundary. (b) Definitions In this section: (1) Event of national significance The term event of national significance means— (A) a coral disease outbreak or coral bleaching event that has had or will likely have a significant detrimental environmental, economic, subsistence use, or public health impact on an affected State