Exactly right.
Plus, IMHO,they're trying to sandbag the President.
If he had accepted the letter, it would have been a tacit admission that he has influence over the Swift Vets for Truth, resulting in editorials to the effect all over the MSM.
Isn't it simply amazing how this 'stupid cowboy from Texas' sees through all their attempts to trap him and ends up turning their contemptuous acts around on them.
I love it when liberal elitists are defeated by their own arrogant attitudes, with a little help from 'stupid cowboys from Texas'.