Secret Service Director Julia Pierson (centre) appeared in Washington on 30 September 2014
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Secret Service director Julia Pierson resigns

The head of the US Secret Service, tasked with guarding President Barack Obama, has resigned following several high-profile security lapses.

Julia Pierson offered her resignation to the Secretary of the Department of Homeland Security on Wednesday.

The move follows a major breach of the White House security on 19 September.

Tom Esslemont reports.

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