Three Senate Democrats have asked the government watchdog for the intelligence community to look into the security clearance process under the Trump administration.

Democratic Sens. Richard Blumenthal of Connecticut, Elizabeth Warren of Massachusetts and Mazie Hirono of Hawaii sent a letter to Wayne Stone, the acting inspector general of the intelligence community, calling for the investigation into the Director of National Intelligence’s “oversight of investigations and determinations of eligibility for access to classified information” for White House staff.