A Christmas tree stands in the Red Room during a press preview of White House holiday decorations on Nov. 29. Andrew Caballero-Reynolds/AFP via Getty Images hide caption toggle caption Andrew Caballero-Reynolds/AFP via Getty Images A Christmas tree stands in the Red Room during a press preview of White House holiday decorations on Nov. 29. Andrew Caballero-Reynolds/AFP via Getty Images For their first Christmas in the White House, the Biden family will celebrate with the theme of “gifts from the heart” for their holiday decor. In unveiling the theme on Monday, President Biden and first lady Jill Biden explained: “The things we hold sacred unite us and transcend distance, time, and…