What Pelosi, McConnell are saying about impeachment trial

The impeachment process against President Trump has remained largely frozen in place since the holidays began. There is still no firm start date for a Senate trial, and some aspects of how such a trial would be run remain in flux. Among the top questions: would the Senate hear testimony from new witnesses like John Bolton? Yamiche Alcindor and Lisa Desjardins join Judy Woodruff to discuss.