Democratic Reps. Donald S. Beyer of Virginia and Ted Lieu of California sent a letter Thursday to acting White House Chief of Staff Mick Mulvaney asking him to immediately strip senior advisor Jared Kushner of his security clearance.

A recent NBC News report revealed that White House security specialists recommended Kushner, President Donald Trump’s son-in-law, not be approved for a top secret clearance, but they were overruled by their supervisor. The career specialists had expressed concerns about Kushner’s foreign ties and susceptibility to foreign influence.

“We urge you to immediately revoke the security clearance of Senior White House Advisor Jared Kushner, and to comply with past and future oversight requests from Congress related to security clearances, information security, and other matters of national security,” Beyer and Lieu wrote to Mulvaney

The Democrats cite the NBC News report as confirmation of concerns they’d been raising about Kushner since Trump took office.

“We raised these concerns in five separate letters to the Trump administration,” they said, citing dates of the letters spanning from April 13, 2017, to June 5, 2018.