Secret Service respond on the North Lawn of the White House after a man jumped the White House fence Wednesday night. This latest incident comes about a month after a previous fence-jumper sprinted across the lawn, past armed uniformed agents, and entered the Executive Mansion. Jacquelyn Martin/AP hide caption

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This 2009 photo provided by Jerry Murphy shows Omar Gonzalez, who was married to Murphy's mother, Samantha, until they divorced in 2012. Authorities have identified Gonzalez as the man who got into the White House after scaling a fence on Sept. 19. AP hide caption

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Secret Service director Julia Pierson enters a hearing room in April to answer questions before a closed meeting of the Senate homeland security committee in Washington. Today, Pierson will appear before a House committee to respond to questions about White House security breaches. Cliff Owen/AP hide caption

itoggle caption Cliff Owen/AP

A Secret Service police officer stands near an entrance to the White House complex during an evacuation, minutes after President Barack Obama departed Washington for Camp David aboard Marine One. A man scaled a fence and reached the residence last night. Evan Vucci/AP hide caption

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At a news conference Wednesday, President Obama spoke mostly about foreign policy but also answered questions about his actions in the U.S. Jewel Samad/AFP/Getty Images hide caption

itoggle caption Jewel Samad/AFP/Getty Images