Singing Christmas Tree upon the location. Since then, the singing Christmas tree concept has spread to Canada, the Philippines, South Korea, Switzerland and Sri Lanka. The most attended tree takes place in Knoxville, Tennessee, with 60,000 attendees in 2007. The first Christmas trees came to the United States in the 1740s from Moravian (now part of the Czech Republic) settlers. In 1851, the first commercial tree lot in the United States was set up in New York City. President of the United States Franklin Pierce set up the first Christmas tree in the White House in 1856. Artificial trees were first developed in
White House Hanukkah Party In addition to continuing the tradition of the White House Hanukkah Party, the Obamas hosted and attended the White House Passover Seder, the first Passover Seder conducted by a sitting US president in the White House. The Seder was originally conducted by three Jewish staffers working on Obama's presidential campaign in 2008, who were surprised when the president tracked them down and joined them – but it became an annual event for all eight years of Obama's administration. Additionally, on May 27, 2010, the Obamas hosted the first White House reception for Jewish American Heritage Month (JAHM), an annual, month-long