Jan. 10, 2011 - President Obama and First Lady Michelle Obama are joined by White House staff on the South Lawn as they observe a moment of silence to honor the victims of the tragic shootings in Tuscon, Arizona.

Jan. 19, 2011 - President Obama welcomes President Hu Jintao to the White House for a state visit in an arrival ceremony on the South Lawn.

Jan. 19, 2011 - President Obama and President Hu Jintao of China hold a joint press conference in the East Room of the White House.

Oct. 31, 2010 - President Barack Obama and First Lady Michelle Obama welcome area students and the children of military families to the White House for trick-or-treating on Halloween.

Jan. 24, 2011 - President Obama, First Lady Michelle Obama and Dr. Jill Biden unveil new measures to strengthen and better coordinate the Federal Government's support for military families.