The US ramped up security measures ahead of the 11th anniversary of the 9/11 terrorist attacks Tuesday, said the White House Monday.
During the meeting, Obama reiterated that departments and agencies must "do everything possible to protect the American people, both at home and abroad".
The White House said over the past month, John Brennan, assistant to the president for homeland security and counterterrorism, has convened numerous meetings to review security measures in place.
