The boxes reportedly contained important records of communication, gifts and letters from world leaders, which, according to the Post, is a violation of the Presidential Records Act.
The Post noted that recent administrations have all had some Presidential Records Act violations, including the use of unofficial email and telephone accounts as well as the destruction of emails.
But a source told the newspaper that the transfer to Mar-a-Lago was "out of the ordinary ... NARA has never had that kind of volume transfer after the fact like this.".
The Hill has reached out to the National Archives and Trump's office for comment.
The Presidential Records Act, which was put in place following the Watergate scandal, requires administrations to document and maintain records of the White House decisionmaking process.
The new development comes just a week after NARA handed over some Trump White House documents to the House select committee investigating the Jan. 6, 2021, insurrection that were reportedly torn up and taped back together.
The National Archives said last week that the documents "included paper records that had been torn up by former President Trump.". »