白宫特工处加强白宫外围安全戒备

The U.S. Secret Service has increased security outside the White House after a man jumped the fence and made it inside the building before being apprehended.

Secret Service Director Julia Pierson ordered enhanced officer patrols and surveillance along the north fence of the White House shortly after the Friday incident. She also ordered a comprehensive review of what happened when an unarmed 42-year-old man scaled the fence and entered the presidential residence, where agents seized him.

President Barack Obama and his daughters had just left the White House Friday evening in a helicopter, when the unarmed intruder scaled the north fence, ran across the lawn and entered the presidential residence, where agents seized him.

Republican lawmaker Jason Chaffetz, chairman of the House of Representatives' subcommittee on national security oversight, called the security breach "totally unacceptable."

A Secret Service official said the agency will review its response.

A day later, on Saturday, a man was arrested for trespassing at the White House. The Secret Service said the man approached the White House gates on foot and was turned away a short time before returning to the gate in a vehicle. He was arrested when he refused to leave.