National security lawyer Mark Zaid says a second whistleblower with direct knowledge of Trump’s call with the president of Ukraine, which set off an impeachment inquiry, has stepped forward and has been interviewed by the intelligence community’s inspector general.

National security lawyer Mark Zaid says a second whistleblower with direct knowledge of Trump’s call with the president of Ukraine, which set off an impeachment inquiry, has stepped forward and has been interviewed by the intelligence community’s inspector general.