“A man masquerading as a member of Congress walked into a secure backstage area without being properly screened and spoke with President Obama at an awards dinner last fall. Five days later, a woman walked backstage unchecked at a gala dinner where Obama was a featured guest. Months after that, two people strolled unnoticed past a Secret Service checkpoint into the first layer of the White House grounds.” Carol Leonnig reports on the various breaches that were revealed in a new report that describes a Secret Service in crisis.