Four years ago Barack Obama was President Elect.  Here's a speech he gave at that time:

Notice his concluding remarks:

Once I take office you can be sure that the United States will once again engage vigorously in…. negotiations, and help lead the world towards a new era of global cooperation on climate change. Now is the time to confront this challenge once and for all. Delay is no longer an option. Denial is no longer an acceptable response. The stakes are too high. The consequences too serious. Stopping climate change won't be easy and it won't happen overnight, but I promise you this. When I am president, any governor who's willing to promote clean energy will have a partner in the White House. Any company that's willing to invest in clean energy will have an ally in Washington. And any nation that's willing to join the cause of combating climate change will have an ally in the United States of America.

Stopping climate change hasn't happened overnight, or over the last four years for that matter. The stakes are higher. The consequences more serious. Stopping climate change is now much harder. Whether as a result of Michael Bloomberg's last minute introduction of climate change onto the agenda or not, Mr. Obama has just been voted another four years in office by the U.S. electorate. Here's his 2012 acceptance speech:

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