US GHG emissions. http://www.epa.gov/climatechange/Downloads/ghgemissions/US-GHG-Inventory-2013-Main-Text.pdf http://www.washingtonpost.com/blogs/fact-checker/post/john-kerrys-misfire-on-us-performance-on-kyoto-emissions-targets/2013/05/29/9a063d84-c8af-11e2-8da7-d274bc611a47_blog.html