Because temps were NOT getting higher. Now the catch phrase "climate change" can be used to mean ANY variation in the weather. What ever they call the movement, it represents a reason for the government to control human behavior.
Shouldnt they be basking in the hope-and-change glow; shouldnt we all be so HAPPY now that Obama has transformed our country into the promised Utopia? Why discuss opponents when Obama clearly has a majority in his back pocket?