I don't agree with the premise of this column. The argument that there is something important that can be determined about the relative proportion of cases ignores the real life significance of this event.

First, the Secret Service is charged with protecting the President. This is much more significant than the consequences of the other US services listed. There is a zero tolerance for this kind of misbehavior.
Second, the activity in question occurred in preparation for a Presidential visit to Columbia. The fact that this occurred on foreign soil is even graver.
Three, any such activity has dire consequences, regardless of its frequency or proportion.

So, making any argument based on proportion of events to judge whether the US Secret Service should be held to a higher standard is a sham use of statistics and lacks merit.

May I suggest that your blog entry be deleted? Basically, it's just an embarrassing piece.