From a linked page:
Thence Enron vigorously lobbied Clinton and Congress, seeking EPA regulatory authority over CO2. From 1994 to 1996, the Enron Foundation contributed nearly $1 million dollars - $990,000 - to the Nature Conservancy, whose Climate Change Project promotes global warming theories. Enron philanthropists lavished almost $1.5 million on environmental groups that support international energy controls to “reduce” global warming. Executives at Enron worked closely with the Clinton administration to help create a scaremongering climate science environment because the company believed the treaty could provide it with a monstrous financial windfall. The plan was that once the problem was in place the solution would be trotted out.