Looks like it. His thought processes (if he has them) are pretty simplistic. You can see his cartoon of Superman as an illegal immigrant child on the Times website (and a link to his e-mail is there as well -- not saying anybody should use it but he wasn't afraid to put it there as another poster said).
There ought to be some way of finding out if his word pieces are actually published in the paper or just put up on the website. I guess it matters less and less nowadays as the webpage may get more readers than the actual printed newspaper and the paper is responsible for all of their content, but it would be nice to think that editors still had some standards.
The Superman cartoon was in the worst taste possible. It’s not like all of Central and South America blew up after all. Now (within the context of the fictional planet), if Krypton were still “up there” and masses of Kryptonians were coming down from the sky to sponge off the welfare system of us Earthlings, you can bet that even liberals would not be welcoming our new super-powered overlords and would be looking for the nearest cache of kryptonite.