If the Greenland ice melts, the sea will rise by 7 metres. These sketches show how the east coast of the USA could look if all the Antarctic ice eventually melts. While this could take many years the worst damage will come early on as all coastal towns will be under water with more severe storm weather.

Light blue indicates the area which would be permanently flooded

East coast of USA if all antarctic ice melts

Map of Siuth East USA if all the  Antarctic ice melts

Obama manifesto $ 150 billion spend on clean energy.
The objective is to free the US from oil imports, generate 25% from renewables by 2025 and develop a local plug in hybrid motor industry.
USA Solar power installed end 08 (ref 187):-
5000 MW Photo voltaics and Reflector - utility generated power (CSP - concentrating solar power.) Another 1000 MW projected Arizona and California.
2250 MW (thermal equivalent) solar hot water systems.