Republican senator suggests John Bolton testimony 'could help the president'

Former National Security Adviser John Bolton grabbed headlines Monday when he somewhat surprisingly said he was "prepared to testify" should the Senate call him as a witness in the upcoming impeachment trial. But Republican senators aren't quite sure if they want to hear from him.Bolton's long been considered a potentially crucial witness since several current and former State Department and national security officials said in previous testimony before the House that he was concerned by Presiden