Democrats Dismiss the Possibility of Trading Witnesses in Senate Trial: This Isn’t ‘Fantasy Football Trade’ by Bradley Cortright January 22, 2020 19 "Witnesses should have something to do with and direct knowledge of the charges against the president."
Chuck Schumer Says Bolton Should Be Subpoenaed in Senate Impeachment Trial by Alex Thomas January 13, 2020 0 "John Bolton is a key witness."
Pelosi Called out for Apparent Misstatement About Impeachment Witnesses During ABC Interview by Bradley Cortright January 12, 2020 10 "House didn't subpoena Bolton and other key impeachment witnesses. And House didn't seek to enforce subpoenas it did issue."
John Bolton Says He Is Willing to Testify in Senate Impeachment Trial If Subpoenaed by Alex Thomas January 6, 2020 7 Former National Security Advisor John Bolton said that he is willing to testify on impeachment if he's called before the Senate.