Mr. Obama is misinformed and misinforming others (e.g. here). His advisers and government agencies have let him (and the country) down in a big way by pushing to an extreme position and now having become blinded by politics.
“If we do nothing we will condemn our children to a planet beyond their capacity to repair: Submerged countries. Abandoned cities. Fields no longer growing.” Mr. Barack Obama, Anchorage Climate conference
Such is already the case. Sending an alarming message to support a government regulation or another international “treaty” is simply political show.
Climates change. Sea levels can indeed rise (but they have not significantly). The globe could warm (but it is now cooling). None of this will change the fact that an EPA regulation or international “treaty” will not and cannot inhibit, stop, or in any other way slow changes in climate which are driven by natural forces.
In the same way a fish cannot avoid affecting the water surrounding it. Humans cannot avoid having an impact on climates. They are part of the natural system. Continuing to talk as if the natural dynamic climate system is somehow controllable is simply a distraction from clear thinking needed on a very important issue facing all of us.