Monckton is listed as a "Global Warming" expert for the Heartland Institute, a Chicago-based freemarket think tank. The Heartland Institute frequently attacks the scientific evidence for human-caused climate change. The Heartland Institute has received over $791,000 from oil-giant ExxonMobil since 1998.
The tobacco industry has also been a regular funder to the Heartland Institute, with at least $190,000 coming from Philip Morris since 1993. The Heartland Institute maintains a smoker's rights section on its website called "The Smoker's Lounge."