JENNIFER LOVEN and TOM RAUM
Associated Press Writers
WASHINGTON – President Barack Obama defensively and sometimes testily insisted on Thursday that his administration, not oil giant BP, was calling the shots in responding to the worst oil spill in the nation’s history.
“I take responsibility. It is my job to make sure this thing is shut down,” Obama declared at a news conference in the East Room of the White House. The Gulf of Mexico oil spill dominated the hour-long session.
He called the spill, now in its sixth week, an “unprecedented disaster” and blasted a “scandalously close relationship” between Big Oil and government regulators.

