As I predicted, Get Religion would provide more interesting material. This time, Terry Mattingly notes that the Cooperman story may owe something to an Americans United press release. (What gives? They have a copy of the card, but I don’t! As my son once said, "What am I, chopped lumber?")
I also note that the Bushes celebrated Hannukah, which Presidents have done with some regularity since the Carter Administration.
He is president of all the people and can join in--and thereby "endorse"--the celebration of any holiday Americans celebrate. His act is an act of respect and inclusion, not an establishment of religion. The sooner we think of holiday greetings as respectful and inclusive, rather than oppressive, the sooner we can leave behind the baggage with which innocent greetings and celebrations have been weighed down.
Let’s call a Christmas, Hannukah, and Kwanzaa truce: no litigation or threat of litigation by anyone. Let people celebrate and greet one another without having to think too hard about what to say. In the unlikely event that there’s conflict, we can work it out, person to person.