That's a logical fallacy:
Just because something is present at a small concentration doesn't mean that nearly doubling its concentration won't have consequences.
As an example: The stress hormone cortisol is normally present at a concentration of 250 nM, much lower than the CO2 concentration in the atmosphere. According to you argument, we should not pay attention to cortisol, because of its low conc.
However, doubling the cortisol concentration has serious consequences, among others a constantly-stressed state and weight gain.
So, if you want to advocate against AGW, please use other arguments, but not that CO2 is present at low concentration and, therefore, of no consequence.
Why should it be more expensive to use domestic energy than to import it from the middle east because that is the only affect this is going to have? Small domestic coal power plants will be shut down killing American mining jobs, and they will be replaced by foreign oil imports. Just like moving all of our production to China, it has no net impact on the climate. All that is accomplished is further destroy the domestic economy.
Anybody that works for a living knows this is grounds for impeachment. The only one that benefits are the oil sheiks that donated to get Obama elected and the media which gets paid to disseminate his propaganda.
