The former White House chief of staff, John F. Kelly, on Wednesday declined to answer questions about the existence of a memo he wrote saying that President Trump had ordered officials to give his son-in-law, Jared Kushner, a security clearance in May 2018, NY Times reported.

Mr. Kelly, who kept his voice level during a 90-minute question-and-answer session at Duke University, would not specifically address Mr. Kushner’s clearance being ordered by Mr. Trump, which The New York Times reported last week.

Mr. Kelly, who left at the end of December, also made clear he did not consider himself working for Mr. Trump, but doing his civic duty to serve. If Hillary Clinton had won, he said, he probably would have worked for her as well.

He also joked wryly about the advice he gave his successor, Mick Mulvaney: “Run for it,” Mr. Kelly said, to laughter. On a serious note, he said, he told him the chief of staff’s job was to tell the president “what he needs to hear.”