The search of Trump’s Mar-a-Lago club earlier this month to retrieve documents from his White House years was an unprecedented law enforcement action against a former president who is widely expected to run for office once again. Officials have not revealed exactly what was contained in the boxes, but the FBI has said it recovered 11 sets of classified records, including some marked “sensitive compartmented information,” a special category meant to protect secrets that could cause “exceptionally grave” damage to U.S. interests if revealed publicly. Why Trump refused to turn over the seized documents despite repeated requests remains unclear. But Trump’s flouting of the Presidential Records Act, which outlines how materials should be preserved, was well documented throughout his time in office.