Arianna Huffington: In one week, the U.S. Constitution will be front and center as Barack Obama solemnly swears to "preserve, protect, and defend" it. Given all that has happened over the last eight years, that oath is not nearly as pro-forma as it used to be. During his final press conference yesterday, President Bush said that when it came time "to protect the homeland" he would "worry about the Constitution of the United States." It wasn't clear, as it hasn't been for most of his time in office, whether his concern was directed at upholding the document or circumventing it. So one of the questions facing the new president is: Will his promise to protect and defend the Constitution include an investigation into the assaults on it perpetrated by members of the Bush administration?