Impeachment witness asks federal judge to decide if he is obliged to testify - CNN
- Impeachment witness asks federal judge to decide if he is obliged to testify CNN
- Key Witness in Impeachment Inquiry Asks Federal Court to Rule Over Testifying The New York Times
- Former Bolton aide asks court if he's required to testify in impeachment probe POLITICO
- Former National Security official asks judge if he must testify in impeachment probe ABC News
- Trump national security official asks judge whether he has to testify in impeachment probe NBC News
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