Calls for witnesses grow as President Trump's trial enters a pivotal week following a report that could increase pressure to call former national security adviser John Bolton to testify

Calls for witnesses grow as President Trump's trial enters a pivotal week following a report that could increase pressure to call former national security adviser John Bolton to testify https://t.co/rZKnvEjbCE pic.twitter.com/RSAW2dW0Zk

— Reuters (@Reuters) January 27, 2020