Former security official Fiona Hill undercuts Trump impeachment defense

Washington • In riveting testimony, a former national security official declared Thursday that a U.S. ambassador carried out a controversial "domestic political errand" for Donald Trump on Ukraine, an allegation undercutting a main line of the president’s defense in the impeachment inquiry.Fiona Hill told House investigators she came to realize Ambassador Gordon Sondland wasn’t simply operating outside official diplomatic channels, as she and others suspected, but carrying out i