Apparently Americans haven't had enough.
Gingrich Frontline interview
"I think if you have mandatory carbon caps combined with a trading system, much like we did with sulfur, and if you have a tax-incentive program for investing in the solutions, that there's a package there that's very, very good. And frankly, it's something I would strongly support." he said.
He then went on to criticize Bush for backing off the pledge.
"If he had instituted a regime that combined three things I just said -- mandatory caps, a trading system inside the caps, as we have with clean air, and a tax incentive to be able to invest in the new technology and to be able to produce the new technology -- I think we would be much better off than we are in the current situation," Gingrich said.
Two months later, Gingrich took part in a debate with Democratic Sen. John Kerry of Massachusetts about environmental matters. Gingrich was slightly less gung-ho about cap and trade than he had been on PBS, but his message of "urgent need for action" on environmental dangers was clear.
"We should address it and we should address it very actively," he said in the debate, citing a UN report documenting the earth’s rising temperatures. "The … consensus is that humans have contributed to that. I don't think there's any consensus that we are the only contribution, but there is a clear agreement that human activity has helped increase the level of warmness."