Oil agency chief quits under pressure

In this May 18, 2010 file photo, Elizabeth Birnbaum, director of the Minerals Management Service is seen on Capitol Hill in Washington. (Pablo Martinez Monsivais, File)

May 27, 2010 11:05:21 AM PDT
The head of the troubled agency that oversees offshore drilling resigned under pressure Thursday as President Barack Obama moved more aggressively to take charge of the Gulf oil spill.