FILE – The building that housed office space of President Joe Biden’s former institute, the Penn Biden Center, is seen at the corner of Constitution and Louisiana Avenue NW, in Washington, Jan. 10, 2023. The discovery of classified documents at an office Biden used during his brief time outside government has thrust his namesake think tank into an unwelcome spotlight. The Penn Biden Center for Diplomacy and Global Engagement was a landing spot for the president after he left the vice presidency in 2017. (AP Photo/Manuel Balce Ceneta, File)

WASHINGTON (AP) — The discovery of classified documents at an office that President Joe Biden used during his few years outside government has thrust his namesake think tank in Washington into an unwelcome spotlight. The Penn Biden Center for Diplomacy and Global Engagement was a landing spot for Biden after he left the vice presidency in 2017. Biden brought with him trusted staff and boxes of files to further the think tank’s mission. Now, a small batch of those files is at the center of controversy because some were classified documents that Biden had no right to retain.