1. Barack Obama is the most liberal senator according to National Journal. However, the far more sophisticated ranking produced by Keith Poole and Jeff Lewis, which takes into account all the votes in a given Congress, places him as the tenth most liberal -- see here, here, here, and here for more. (We wrote about the similarly misleading National Journal ranking of John Kerry as the most liberal senator at Spinsanity back in 2004.)
2. Bill Clinton called for slowing the economy to fight global warming according to Jake Tapper of ABC News. Actually, Clinton raised that possibility and then rejected it -- for more, see here, here, and here.