I, for one, am fond of my quality of living. The only way that the entire US population could fit into New Hampshire would be to cover New Hampshire in Corbusieresque tower blocks.
Seems to imply this would be better for the environment. Wish they elaborated on this more... might do less damage to less land, but seems like it would do severe damage to that one plot. Not sure. Hm...
Ah. An interesting concept that could be applied at the state level rather than nationally. We could move everyone out of the cities and into the suburbs and achieve similar benefits.