UPDATE (02/28/19): The New York Times is reporting that Trump himself ordered a top-secret security clearance for son-in-law Jared Kushner, against the advice of his then Chief of Staff John Kelly and White House counsel Donald McGahn. In January, Trump stated he had no involvement in Kushner's security clearance.
The House Oversight Committee, led by Rep. Elijah Cummings (D-MD) has already launched an investigation into the White House’s security clearance process. The NBC report makes it clear the Senate must immediately follow suit. Furthermore, both chambers must call on Carl Kline to testify publicly about why he approved security clearance for Kushner and others against the recommendations of career security experts.