Spiegel: US President Barack Obama addressed the American public from the Oval Office on Tuesday evening. US President Barack Obama has taken the fight to BP. But it is time that he picks a fight with the American public. American energy consumption is at the root of the Gulf of Mexico disaster, but Obama preferred to sidestep the issue in his Tuesday speech. The Oval Office in the White House is more than an office. It is also the nation’s living room. When the most important man in …