The states, as represented by two senators from each, is sitting in judgment of the president of the United States of America. John Bolton, the former director of the NSA, is a critical witness in that trial. He recently announced that if the Senate issues a subpoena for his testimony, he is prepared to testify.
Sens. Chuck Grassley and Joni Ernst have a duty to the truth to ensure our Senate hears witnesses and compels Bolton to testify before the people and the Senate. I am sure his testimony will clarify any doubt they may have as to the guilt of the president.