The National Archives and the Justice Department are investigating the discovery of classified documents at the Penn Biden Center for Diplomacy and Global Engagement, an office where President Joe Biden spent time after eight years in the Obama administration. Approximately 10 documents marked classified were found at the Biden residence in Wilmington, Del., including top-secret material, and another 10 were found at the office. The investigation is ongoing to determine how the documents ended up in the office and why they were not removed prior to the president’s departure.