White House official won’t testify in impeachment probe without order

Washington • A former White House national security official defied a House subpoena Monday, prompting the Democrat leading the impeachment probe to declare that President Donald Trump’s administration is “building a powerful case” for his impeachment.Charles Kupperman, who was a deputy to former national security adviser John Bolton, failed to show up for a scheduled closed-door deposition Monday after asking a federal court in Washington for guidance on whether he was le