The National Archives and Records Administration last month retrieved boxes containing information from former President Trump’s time at the White House that he took to Mar-a-Lago instead of handing over to the agency, the Washington Post reports.

Details: The boxes contained correspondence between Trump and North Korean leader Kim Jong-un, which he once referred to as “love letters,” and a letter from former President Obama, per the Post.

State of play: This puts into question whether Trump followed the Presidential Records Act, which requires that presidential records be immediately transferred to the national archivist as soon as a president leaves office.