Hopes are fading for a binding deal here at the Copenhagen climate summit one day before the talks conclude. The Obama administration has been widely criticized for refusing to change its proposal to cut emissions by just four percent of 1990 levels. The European Union, by contrast, has offered to cut emissions by at least 20 percent. China, meanwhile, has also been faulted for reportedly trying to abandon a binding accord in favor of a political declaration. President Obama arrives in Copenhagen tomorrow on the summit’s final day.