President Barack Obama pauses as he speaks at the morning plenary session of the United Nations Climate Change Conference at the Bella Center in Copenhagen, Denmark, Friday, Dec. 18, 2009. (AP Photo/Susan Walsh)
President Barack Obama pauses as he speaks at the morning plenary session of the United Nations Climate Change Conference at the Bella Center in Copenhagen, Denmark, Friday, Dec. 18, 2009. (AP Photo/Susan Walsh)