As you may know, President Calvin Coolidge, who served as the 30th President of the United States from 1923 to 1929, was the first president to ever officially declare a national Christmas tree. This is a tradition that continues to this day, with each sitting president of the United States selecting a tree to serve as the official national Christmas tree. However, there has not been a president who has banned Christmas trees entirely. It is possible that you may be referring to the ban on Christmas trees in certain areas or situations, but this is not a nationwide or presidential policy.