Original sentence: The group, which promotes environmental skepticism, has been characterized as a leader in efforts to stop the government from addressing climate change
Edited sentence: According to the Washington Post, the group was for "long dismissed as cranks by mainstream scientists and politicians in both parties" until the group was embraced by Donald Trump's 2016 presidential campaign.The group, which opposes the scientific consensus on climate change, is known to promote falsehoods about climate change and has been characterized as a leader in efforts to stop the government from addressing climate change