Washington (CNN) -- President Obama will appoint Julia Pierson as the first female director of the Secret Service, a White House official told CNN on Tuesday.
Pierson has been the chief of staff to the director since August 2008. She began her career as a special agent in 1983 in the Miami field office.
In 2000 she was promoted to special agent in charge of protective operations.
She will replace Mark Sullivan, who retired in February.