U.S. judge dismisses impeachment suit from ex-White House aide

A U.S. federal judge on Monday dismissed a lawsuit from a former White House official who had challenged a congressional subpoena in the impeachment inquiry involving U.S. President Donald Trump. Charles Kupperman, a former deputy national security adviser, sued in October after being subpoenaed by House Democrats to testify in their impeachment investigation into Trump's interactions with Ukraine. He had asked a judge to decide whether he had to comply with that subpoena from Congress or with a