The Washington Post reports that a federal judge has ruled that a high-ranking executive at Washington's Smithsonian Institution indeed assaulted a Smithsonian janitor, but is immune from injury lawsuits. The U.S. District jurist ruled that the executive couldn't be sued owing to a federal law intending to shield certain federal employees from injury claims. The lawsuit alleged that the senior Smithsonian manager violently yanked a lanyard that was around the janitor's neck, shoved her head against a wall, and slammed her up against a door. According to the Washington Post, the incident took place in a parking garage then owned by the Smithsonian after the executive forgot her key card and attempted to follow the janitor through a security door. The janitor objected to what she saw as unauthorized entry to the building, and the attack ensued.