John McCain doesn't appear to understand his own emissions plan

Depends on the definition of the word 'mandatory' | Gristmill: The environmental news blog | Grist

MCCAIN: Sure. I believe in the cap-and-trade system, as you know. I would not at this time make those -- impose a mandatory cap at this time. But I do believe that we have to establish targets for reductions of greenhouse gas emissions over time, and I think those can be met.