Depose:
to remove from a throne or other high position plotting to depose the kinga deposed military leader [Merriam-Webster]
to ask questions of a witness or a party to a lawsuit at a deposition (testimony outside of the courtroom before trial). [The Free Dictionary / Legal]
Given these two definitions of depose, there’s a certain delicious double meaning to this remark by Senator Jack Reed. From Talking Points Memo:
CNN’s Wolf Blitzer asked if Reed was saying Trump should make a statement under oath.
“I think that’s ultimately what will happen,” Reed said. “I would expect at some point, not right away, but at some point that Mr. Mueller will would feel he has to depose the President.”