“currently many communities on the East Coast dealing with sea-level rise and storm surges nourish their beaches and slow down erosion by strengthening them with large amounts of sand. The Federal government currently covers on average about two thirds of the cost. A March 2015 journal article concludes “a sudden removal of federal nourishment subsidies, as has been proposed, could trigger a dramatic downward adjustment in coastal real estate, analogous to the bursting of a bubble.”