The noun verb example is an easy and common mistake.
Why? Why is this the case for a graduate from one of the most elite universities in the world?
It’s also one of the FIRST, and EASIEST of mistakes that someone should be able to catch on a cursory overview of their own writing! The fact that the mistake is made numerous times through the course of the correspondence and was never corrected says many things about Obama. Mainly, that he didn’t even bother to proofread it.
I’m not perfect, and I don’t expect anyone else to be either. However, if you are sitting on the HARVARD Law Review Board and you can’t even get your noun-verb agreement correct when writing what is supposedly a very important letter then you really have no business even being AT Harvard - much less serving as the head of a legal publication!