Bangladesh, Sept. 22 -- The release of more than 70 photographs from FBI searches connected to former President Joe Biden's classified-document investigation has reopened one of the most politically charged questions surrounding the American justice system: were Donald Trump and Joe Biden treated differently by federal investigators because of who they were?

The photographs, obtained by the Oversight Project and published by The Federalist, show FBI agents handling documents recovered from the Penn Biden Center in Washington DC, and Biden's Wilmington, Delaware, residence. The images have become the basis for a renewed argument that the federal government adopted markedly different approaches when investigating two presidents accused of...