US President Barack Obama and First Lady Michelle Obama greet trick or treaters at the North Portico of the White House as they celebrate Halloween in Washington, DC, on October 31, 2010. The First couple welcomed local children and military families to celebrate Halloween. (EPA) Published Monday, November 01, 2010 Sunday, January 10, 2016 Obamas welcome trick or treaters View on Emirates24|7 Most Shared {{title}}