It was also slightly marred by a bumbled oath-taking, which Mr Obama corrected-though he did not need to-in the White House the next day.

这期间还发生了一件小插曲，奥巴马在宣誓时出现口误，不过第二天他就在白宫重新宣誓纠正过来了——即使他无需这样做。