A Democrat on the House Oversight Committee is calling on the White House to suspend the security clearance of President Trump Donald John TrumpObama calls on Senate not to fill Ginsburg's vacancy until after election Planned Parenthood: 'The fate of our rights' depends on Ginsburg replacement Progressive group to spend M in ad campaign on Supreme Court vacancy MORE's son-in-law and senior adviser Jared Kushner Jared Corey KushnerAbraham Accords: New hope for peace in Middle East Tenants in Kushner building file lawsuit alleging dangerous living conditions Trump hosts Israel, UAE, Bahrain for historic signing MORE.

Rep. Raja Krishnamoorthi Subramanian (Raja) Raja KrishnamoorthiDemocratic chairman says White House blocked Navarro from testifying Democrats urge CDC to update guidance to encourage colleges, universities go tobacco-free Trump says people 'in the dark shadows' are controlling Biden MORE (D-Ill.) on Saturday said the allegations that Kushner sought to establish a backchannel line of communication between the Trump transition team and the Kremlin are "disturbing" and called on his panel to subpoena all documents related to Kushner's meetings with Russian officials during the transition.

"The issue is not simply that Mr. Kushner wanted a communication backchannel; it’s that Mr. Kushner sought to pursue one with a hostile power months after American intelligence agencies had collectively acknowledged the Kremlin’s cyberwarfare against the United States," he said in a statement. He also demanded that Kushner testify before the Oversight Committee.

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Controversy has grown in recent days around Kushner's December meetings with Ambassador Sergey Kislyak and Russian banking executive Sergey Gorkov, and reports that he had discussed with Kislyak the possibility of setting up a secret communications channel with Moscow.

The Washington Post and NBC News reported Thursday that the FBI had turned its attention on Kushner's meetings as part of its larger investigation into Russian election meddling and possible collusion between the Trump campaign and Russia.

While Kushner is a person of interest in that probe, it does not mean he is suspected of wrongdoing or subject to any criminal charges.

Krishnamoorthi's call for Kushner's security clearance to be suspended echoes one from the Democratic National Committee, which made the same demand after the senior adviser was revealed as a person of interest in the FBI probe. A day later, the DNC called for Kushner to be fired from his White House post.

Kushner, who is married to Trump's elder daughter Ivanka, is considered to be among the president's most loyal advisers and confidants, and has been charged with executing a sweeping agenda, ranging from exploring ways to reform the federal government to Middle East peacemaking.