Sorry is not the hardest word for the Obama administration. Since Obama won the presidential election, the former senator from Illinois and top-ranking officials of his administration, including Vice President Joe Biden and Treasury Secretary Timothy Geithner, have delivered a handful of apologies. At his first press conference as president-elect, for example, Obama made a remark about Nancy Reagan that he quickly regretted. Asked if he had spoken with any ex-presidents since the election, Obama said he had contacted all former presidents “that are living.” “I didn’t want to get into a Nancy Reagan thing about, you know, doing any...