The extraordinary incident gave added point to a broader question increasingly asked as he nears the end of his eight-year term in office: was George Bush the worst ever US president?

• 在布什临近8年执政结束时，一个不断受到广泛关注的问题就是他究竟是不是最差的一个美国总统?而这突如其来的小插曲，恰恰为此凭添了补充点。