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President Barack Obama, right, first lady Michelle Obama, center, her mother Marian Robinson, left, hand out Halloween treats as they welcome children from the Washington area and military members and their families to trick-or-treat at the White House in Washington, Saturday, Oct., 29, 2011. (AP Photo/Pablo Martinez Monsivais)

Halloween at the White House

January 1, 1970

President Obama and the First Lady host Halloween for military families at the White House on Oct. 29.