The lunch conversation inevitably turned to whether the White House would display its crèche, customarily placed in a prominent spot in the East Room. Ms. Rogers, this participant said, replied that the Obamas did not intend to put the manger scene on display — a remark that drew an audible gasp from the tight-knit social secretary sisterhood. (A White House official confirmed that there had been internal discussions about making Christmas more inclusive and whether to display the crèche.) Yet in the end, tradition won out; the executive mansion is now decorated for the Christmas holiday, and the crèche is...