President Donald Trump (C) delivers remarks at the beginning of a meeting with his son-in-law and Senior Advisor Jared Kushner (L), Homeland Security Secretary John Kelly and other government cyber security experts in the Roosevelt Room at the White House January 31, 2017 in Washington, DC.Chip Somodevilla/Getty Images John Kelly, ex-White House chief of staff, said Trump didn't believe in the classification system. "His sense was that the people who are in the intel business are incompetent," Kelly told The Washington Post. Kelly's remarks come amid an FBI probe into the former president's Mar-a-Lago residence in Florida. President Donald Trump's former chief of staff on Saturday said he took top secret documents to his Mar-a-Lago residence in Florida because he "didn't believe" in the White House classification system.