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U.S. Assistant to the President for Homeland Security and Counterterrorism John Brennan, nominated by U.S. President Barack Obama to be the next Director of the Central Intelligence Agency, testifies before the Senate Intelligence Committee February 7, 2013 in Washington, DC. (Photo by Alex Wong/Getty Images).
President Obama taps Denis McDonough to serve as his chief of staff and lead the team at the White House. President Barack Obama announces Denis McDonough as his Chief of Staff, replacing Jack Lew, the Presidentâs nominee for Treasury Secretary, in the East Room of the White House, Jan. 25, 2013. President Obama today tapped Denis McDonough to serve as his Chief of Staff and lead the team at the White House.