Senator Walks Out On Climate Change Talks

A climate-change bill that was scheduled to be unveiled at a news conference Monday, is now up in the air after Republican Senator Lindsey Graham walked out of talks.

Graham had worked with Senator John Kerry and Senator Joe Lieberman to unveil details of their so called "tri-partisan" climate-change legislation.

But Graham said Saturday that he was walking out of talks because of democratic efforts to bring up an immigration reform package.

A senior white house official said in recent days Graham has been privately threatening to abandon the climate talks unless Senate Majority Leader Harry Reid backed off plans to move to a debate on comprehensive immigration reform ahead of the environmental legislation.