Barack loves the word unprecedented. The financial collapse was unprecedented and called for unprecedented action. He had an unprecedented meeting with students in China. He promised an unprecedented effort to root out waste and inefficiency (good luck with that).
Now, we have the "potentially unprecedented"oil leak. And because it is "potentially unprecedented" it will require a "relentless" government effort, which translates into more government control and higher costs and taxes. Also, it means if it takes a long time to stop the leak and fix the damage no one should hold Obama responsible. This guy really is the Joker.