Attorney General Jeff Sessions declined to confirm or deny whether or not the Justice Department is investigating if Russian payments to the Clintons improperly influenced a decision by the Obama administration to approve a Russian takeover of a U.S. uranium mine.

In response to questioning by Sen. Chuck Grassley (R., Iowa) during a Wednesday Judiciary Committee hearing, Sessions said only that the Justice Department would “take such actions as is appropriate.”

“Mr. Chairman, we will hear your concerns. The Department of Justice will take such actions as is appropriate, I know,” Sessions said, noting that “some people involved have gone to jail in that transaction already.”

“Without confirming or denying the existence of any particular investigation, I would say I hear your concerns and they will be reviewed,” he added.