You seem to have misread what I wrote. I wrote that the economy was merely manmade, not that the concept of anthropogenic climate change was. Please read things more carefully.
The Republican Party platform states,
“Conservation is inherent in conservatism. As the pioneer of environmentalism a century ago, the Republican Party reaffirms the moral obligation to be good stewards of the God-given natural beauty and resources of our country. We believe that people are the most valuable resources and that human health and safety are the proper measurements of a policy's success. We assert that private ownership has been the best guarantee of conscientious stewardship, while some of the worst instances of degradation have occurred under government control. Poverty, not wealth, is the gravest threat to the environment, while steady economic growth brings the technological advances which make environmental progress possible.
The environment is too important to be left to radical environmentalists. They are using yesterday's tools to control a future they do not comprehend.”