It will happen when his pals, the insurance people, start getting cold (hot?) feet.
This article is the first I've seen reflecting commercial interest NOW about what might happen THEN (when Global Warming starts to really make trouble).
Bush doesn't listen to scientists, the UN, environmentalists, the Pentagon and the frantic cries of people living in atoll nations (like the Maldives) who are starting to go underwater because of Global Warming.
Will he listen to insurance companies?