Add Yahoo as a preferred source to see more of our stories on Google. Former President Donald Trump in the Oval Office.Erin Schaff-Pool/Getty Images Charles Kupperman served as former President Donald ...

All right. The House is going to vote on Thursday to formalize the impeachment inquiry. This comes as investigators have been stymied in their push to question certain witnesses. NPR national ...

The House of Representatives says it no longer needs to subpoena former deputy national security adviser Charles Kupperman for his testimony, another sign that Democrats don’t want or feel they need a ...

Attorneys for Charles Kupperman, the former deputy national security adviser who hasn’t testified about President Donald Trump and Ukraine after he tied up his House subpoena in court, are doing what ...

The Justice Department and the House have asked a federal judge to postpone the court hearing Thursday about impeachment witness Charles Kupperman's testimony. The Justice Department and the House ...

President-elect Donald J. Trump has long seen his bombastic national security operative as a political “enforcer.” But former colleagues question his fitness for the job. By Elizabeth Williamson The ...