From ABC News' Sunlen Miller:
After receiving his regular rounds of morning briefings, President Obama will meet with Prime Minister Saad Hariri of Lebanon in the Oval Office.
The two leaders will "discuss U.S. support for Lebanon’s sovereignty, independence, and stability as well as other regional issues," the White House says.
In the afternoon, the president and first lady will travel to Tucson, Ariz. to attend the “Together We Thrive: Tucson and America" memorial event at the University of Arizona Tucson in honor of the victims of Saturday's shooting.
Attorney General Eric Holder, Secretary of Homeland Security Janet Napolitano and Justice Anthony Kennedy, Circuit Justice for the United States Court of Appeals for the Ninth Circuit, will also attend the event, along with members of congress.
The president and the first lady will return to Washington, D.C. in the late evening.