Conversation so far:
What is his position on Global Warming?
Rohrabacher doubts that global warming is caused by humans.
What does he think global warming is caused by?
During a congressional hearing on climate change on February 8, 2007, Rohrabacher mused that previous warming cycles may have been caused by carbon dioxide.

Question: How did people respond to his beliefs?
Self-contained rewrite: How did people respond to Dana Rohrabacher's beliefs about global warming?