Obama tries to make global warming an issue for voters:

Ask Al Gore and Nancy Pelosi how that worked out.
In his weekly radio address, Obama trie to make global warming an election issue:

If you agree with me, I’ll need you to act. Educate your classmates and colleagues, your family and friends. Speak up in your communities. Remind everyone who represents you, at every level of government, that there is no contradiction between a sound environment and a strong economy – and that sheltering future generations against the ravages of climate change is a prerequisite for your vote.

Read more/Watch the address.

http://www.whitehouse.gov/the-press-office/2013/06/29/weekly-address-confronting-growing-threat-climate-change