'I sleep at night': Ex-Trump adviser John Bolton says his testimony would not have changed impeachment outcome

Former national security adviser John Bolton defended his decision not to testify in the impeachment process against President Donald Trump, adding he didn't believe the result would have been any different if he had.

"People can argue about what I should have said and what I should have done," Bolton said Wednesday during a lecture at Vanderbilt University. "I would bet you a dollar right here and now, my testimony would have made no difference to the ultimate outcome.

"I sleep at night because I have followed my conscience."...