U.S. EPA has denied multiple petitions challenging its finding that climate change is based on sound science, according to this press release. "After months of serious consideration of the petitions and of the state of climate change science, EPA finds no evidence to support [the petitioners'] claims. In contrast, EPA’s review shows that climate science is credible, compelling, and growing stronger."
Did you expect a different result? For more from U.S. EPA, see here.