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/Olivier Douliery +++(c) dpa - Bildfunk+++
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/Olivier Douliery +++(c) dpa - Bildfunk+++ © dpa | dpa
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/Olivier Douliery +++(c) dpa - Bildfunk+++
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/Olivier Douliery +++(c) dpa - Bildfunk+++ © dpa/DPA | dpa
US President Barack Obama greets 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/Olivier Douliery +++(c) dpa - Bildfunk+++
US President Barack Obama greets 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/Olivier Douliery +++(c) dpa - Bildfunk+++ © dpa/DPA | dpa
A band is performing for Halloween as people gather at the North Portico of the White House in Washington, USA, on October 31, 2010. US President Barack Obama and First Lady Michelle Obama will greet trick or treaters at the North Portico of the White House as they celebrate Halloween. EPA/Olivier Douliery +++(c) dpa - Bildfunk+++
A band is performing for Halloween as people gather at the North Portico of the White House in Washington, USA, on October 31, 2010. US President Barack Obama and First Lady Michelle Obama will greet trick or treaters at the North Portico of the White House as they celebrate Halloween. EPA/Olivier Douliery +++(c) dpa - Bildfunk+++ © dpa/DPA | dpa
Kids gather at the North Portico of the White House for trick or treating in Washington, USA, on October 31, 2010. US President Barack Obama and First Lady Michelle Obama will greet trick or treaters at the North Portico of the White House as they celebrate Halloween. EPA/Olivier Douliery +++(c) dpa - Bildfunk+++
Kids gather at the North Portico of the White House for trick or treating in Washington, USA, on October 31, 2010. US President Barack Obama and First Lady Michelle Obama will greet trick or treaters at the North Portico of the White House as they celebrate Halloween. EPA/Olivier Douliery +++(c) dpa - Bildfunk+++ © dpa/DPA | dpa