To an extent the USA **is** already a set of smaller nations called states. Each state has its own laws about many things and in some ways the USA is like the EU.
The first step to breaking the process is of corporatization is to stop lobbying. This is really just legalized bribery. Obama has made some signals about this which will no doubt make some parties very skittish.
US minimum wages stink. They are lower than in many parts of the world (Europe, Australis, New Zealand etc). Sure they are higher than many African and Asian countries, but I don't believe that Americans want to be equated with these economies.
Minimum wage labor provides much of the engine room for a consumer culture: from farm laborers picking those Californian tomatoes to freight workers and retail staff.
The other huge step is for America to become a better international citizen. Instead of needing to dominate from a position of military power it should be trying to play nice with the other kids in the sandpit. This obsession with domination goes hand in hand with fear. Again, Obama seems to be signalling better relationships with the rest of the world.
Sure, these don't directly impact environmental issues, but they would shift thinking towards a position with more lealthy outlooks (ethically and environmentally).
Written in July 2008