This was Representative Jay Inslee's (D-WA) rebuttal to Rep. Michael Burgess at the March 15, 2011 House Energy and Commerce Committee markup (March 15, 2011) of the "Energy Tax Prevention Act," to block EPA from regulating greenhouse case emissions
Rep. Burgess had earlier commented "I exhale CO2. It is not a trigger for asthma."
The transcript, tweeted in real time by an observer at the hearing, can be found here.
It's simply not true the "more is always better." In fact, in life its almost always true that too much of a good thing is a bad thing." The key is balance. More examples
We need water to live, but too much pure water can lead to sodium imbalance (hyponatremia) and even Fatal Water Intoxication.
We need oxygen to live, but inhaling too much pure oxygen can be toxic. See Oxygen Toxicity.
Need we mention food and the lethal consequences of obesity?
"Let me address the argument that CO2 is benign because we exhale it. That's about as good an argument as saying a tsunami isn't dangerous because we drink water."—
-- Rep. Jay Inslee at a 2011 committee hearing