The first woman to lead the Secret Service is sworn in at the White House.
Veteran agent Julia Pierson now leads the male-dominated agency, which was tarnished last year in a scandal involving agents and prostitutes.
President Barack Obama welcomed Pierson to the role.
SOUNDBITE: (English) U.S. PRESIDENT BARACK OBAMA SAYING:
"Obviously, she's breaking the mould in terms of directors of the agencies and I think that people are all extraordinarily proud of her and we have the greatest confidence in the wonderful task that lies ahead and very confident she is going to do a great job."
Pierson began her career in 1983 as a special agent in Miami.
She takes over the top seat from Mark Sullivan who retired in February.
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