This is a joke, right?
Not all Presidents are the President of the United States of America.
No it's not a joke and I love the Harry Potter books and movies, but do you think the extraneous reference to a "president" of a distant country who is a "wretched man" is referring to the president of Indonesia perhaps? Please and on the first page no less.
And not all Presidents of the United States are GWB. There were others, and some were wretched.
That's right. The reference seems vague. There are so many other things in the world to be offended about, this one seems like a non-issue.