Second, it's best to make a topical response to something that has already run in the paper, so they know you actually read that paper.
Third, it's best to keep the letter under 200 words if you want it published.
And fourth, papers frown upon seeing a letter they have published in other publications. They want first run exclusivity for a letter, and that's why I don't post a letter to the editor on FR until after it's run in the paper.
... all good advice I hope you take! ... which is why I said alter it any way you like.
Onward for Bush! AMPU
And fifth, Its going directly to the thrash bin.