Security clearance issues for Jared Kushner, the president’s son-in-law and a senior advisor, have often been highlighted. Six Democratic senators wrote to FBI Director Christopher Wray on Wednesday asking for a full list of White House staffers working without full security clearance.

“We are deeply concerned that high level officials operating under an interim security clearance, like Jared Kushner, read the President’s daily intelligence briefing,” the senators wrote.