How did America, a nominally Christian nation, get to the point that a cheerful "Merry Christmas" is seen as intolerant and our gifts are placed under "holiday trees"? "The President and Mrs. Reagan extend to you their best wishes for a joyous Christmas and a peaceful New Year." In 1982, that was the message appearing on President Reagan's Christmas card to thousands of GOP faithful. In 1983, the "greeting" changed: "The President and Mrs. Reagan extend to you their warmest wishes for happiness at the holidays and throughout the new year." Thus did the Reagan White House stop sending Christmas...