WASHINGTON -- A lawyer for White House adviser Jared Kushner is pushing back after a Senate committee said Kushner had not been fully forthcoming in its probe into Russian election interference.

Lawyer Abbe Lowell says Kushner encouraged others in U.S. President Donald Trump's campaign to decline meetings with foreign people who "go back home and claim they have special access to gain importance for themselves."

The Senate Judiciary Committee wrote a letter to Kushner, who is Donald Trump's son-in-law, on Thursday asking him to provide additional documents to the committee, including one sent to him involving WikiLeaks and a "Russian backdoor overture and dinner invite."

The senators noted they've received documents from other campaign officials that were copied to or forwarded to Kushner, but which he did not produce.