EPA Labels CO2 as Pollutant

I just want to know when they will do the same concerning water vapor, a vastly more important part of global warming. I once raised this issue in a newspaper discussion forum about the idea of Hydrogen fuel and was treated as a moron "that just turns into clouds!"

But seriously - if emission of CO2 is as dangerous to human life as the EPA suggests, for the reasons it describes, shouldn't something with about 100x the potency at causing global warming be treated accordingly?