Obama Calls Moment of Silence

President Barack Obama will lead a national moment of silence Monday at 11 a.m. (eastern) for the six people killed and 13 wounded in the assassination attempt on Congresswoman Gabrielle Giffords in Tucson Saturday.

Obama said in a statement, "It will be a time for us to come together as a nation in prayer or reflection, keeping the victims and their families closely at heart."

Giffords, 40, remains in intensive care at the hospital after being shot in the head. Those killed include Arizona's chief federal judge, Giffords's director of community outreach, and a 9-year-old girl.

Jared Loughner, 22, has been charged with one count of attempted assassination on a member of Congress, two counts of killing an employee of the federal government and two counts of attempting to kill a federal employee, with more charges expected.