This is a pretty powerful piece by William Galston.
[D]espite the enormous growth in the nation’s diversity over the past 225 years, Christian conviction remains pervasive.
If you doubt this, take a look at the survey the Pew Research Center released without much fanfare two weeks ago. Among its principal findings: 73% of U.S. adults believe that Jesus was born to a virgin; 81%, that the baby Jesus was laid in a manger; 75%, that wise men guided by a star brought gifts of gold, frankincense and myrrh; and 74%, that an angel announced the birth of Jesus to shepherds. Fully 65% of Americans believe all four of these elements of the Christmas story, while only 14% believe none of them.