He only wants to use Price Signals to "change behavior".
If you don't actually think about it, it doesn't sound too bad. Then you realize that for the government "Price Signals" are taxes, fees and other restrictive actions.
Link with video.
So what does Obama want to do? Use government power to change what you can do, into something that pleases him.
Here's a specific example of Obama's "Price Signals" in action.
Say goodbye to 1/5 of the energy production in the US.
In short he wants to destroy the coal industry and make energy prices skyrocket.
Wow! Combine that with his plan to drastically raise taxes and I'm sure the US economy will go straight down the tubes.
Both links via LGF