Unfortunately, one top Democratic prospect, Congressman Baron Hill, has voted for a number of free-trade deals, including Permanent Normal Trade Relations with China.

NPR: The Nation: Bye Bayh, Bring On The Populists

He called for a pragmatic approach towards sustainable development, including partnerships and trade relations with countries that want to "green" their economies.

BBC: EU 'disappointed' by Rio+20 agreement

The other path is taken by leaders who fulfill their obligations, and which would lead to improved relations between the United States and Sudan, including supporting agricultural development for all Sudanese, expanding trade and investment, and exchanging ambassadors, and eventually, working to lift sanctions -- if Sudanese leaders fulfill their obligations.

WHITEHOUSE: President Obama Attends Ministerial Meeting on Sudan