Politico: President Barack Obama's annual addresses to Congress offer a glimpse at a leader whose rhetoric on energy and the environment has changed dramatically over the past four years -- from his calls to pass sweeping climate legislation in 2009 to a full-throated embrace of natural gas last year.
The speeches also matched the ebbs and flows in Obama's political fortunes.
Four years ago, as a popular president with Democratic House and Senate majorities, Obama told Congress that his greenhouse gas...