Don’t get me wrong, I’m enjoying his shots at Obama and am applauding him for it; I’m a writer and badly constructed sentences set my teeth on edge.
Well, then, why don't you point out, for the instruction of the rest of us, a couple of the more eggregious exemples of what threaten to loosen your bridgework.
The tense usage is not correct, and he should have written, "she had written..."
But that solicism is not an example of "poor sentence construction." The whole argument does not fall down because his editor did not change one letter in a verb.
If you want to grind your teeth away on that one, be my guest. We have much bigger issues in this country.