Patient Nina Pham is hugged by Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, outside of the National Institutes of Health in Bethesda, Md., on Friday. Pham was discharged after testing free of Ebola. Pablo Martinez Monsivais/AP hide caption
President Barack Obama casts a ballot in early voting for the 2014 midterm elections at the Dr. Martin Luther King Community Service Center in Chicago on Monday. Brendan Smialowski /AFP/Getty Images hide caption
Ron Klain (left), then chief of staff for Vice President Joe Biden, talks with Sen. Sheldon Whitehouse on Capitol Hill in December 2009. Jonathan Ernst/Reuters/Landov hide caption
Five ambulances, donated by the U.S. to help combat Ebola, are lined up after a ceremony attended by Sierra Leone's president, Ernest Bai Koroma, in Freetown on Sept. 10. Michael Duff/AP hide caption
President Obama speaks about the Ebola epidemic Thursday at United Nations headquarters in New York. Pablo Martinez Monsivais/AP hide caption
The U.N. Security Council on Wednesday unanimously approved a historic resolution aimed at ending the flow of foreign extremists to the world's conflicts. President Obama thanked the council but warned that "a resolution alone will not be enough." Julie Jacobson/AP hide caption
President Obama addresses the 69th session of the United Nations General Assembly, at U.N. headquarters in New York on Wednesday. Richard Drew/AP hide caption
The chamber of the House of Representatives empties following a joint meeting of Congress with visiting Ukrainian President Petro Poroshenko on Sept. 18. J. Scott Applewhite/AP hide caption
President Obama speaks at the U.N. Climate Summit on Tuesday. Discussing America's past, Obama told the group, "We recognize our role in creating this problem." Andrew Burton/Getty Images hide caption
A Secret Service agent gives directions during an evacuation from the White House minutes after President Barack Obama departed for Camp David aboard Marine One on Friday in Washington. Evan Vucci/AP hide caption
President Obama and Vice President Biden on Friday debuted the "It's On Us" campaign to help colleges and universities prevent and respond to sexual assault on campus. J. Scott Applewhite/AP hide caption
Ukrainian President Petro Poroshenko, joined by Speaker of the House John Boehner and Vice President Joe Biden, acknowledges lawmakers' applause after addressing a joint meeting of Congress. J. Scott Applewhite/AP hide caption
A man played bagpipes on a "short walk to freedom" march in Edinburgh, Scotland, on Thursday as polling in the independence referendum began. Paul Hackett/Reuters/Landov hide caption
Iranian Foreign Minister Mohammad Javad Zarif speaks during a recent news conference in Rome. Zarif told NPR that the U.S. has been hesitant and contradictory in its approach to dealing with the self-declared Islamic State. Fabio Campana/EPA/Landov hide caption
President Obama speaks at U.S. Central Command, at MacDill Air Force Base in Tampa, Fla., on Wednesday. Pablo Martinez Monsivais/AP hide caption