As the Senate impeachment trial continues, Democrats, including both of Minnesota’s senators,  are continuing to push for allowing witnesses to testify. 

Minnesota Senator and Presidential candidate Amy Klobuchar spoke with CBS Evening News editor/correspondent Norah O'Donnell on Monday.

“In one really interesting moment, we actually took a vote on ‘Why don't we just let conservative justice John Roberts decide on what witnesses are relevant?’ That was an actual vote and the Democrats voted for it. We will give this to him, the Chief Justice of the Supreme court, and they voted it down. So to me, Nora, that looks like ‘They're afraid of the truth,’ Klobuchar said.

Senator Tina Smith, appearing WCCO's Real Talk with Roshini Rajkumar, said that all the evidence should be heard.

"We shouldn't be afraid of the facts," she said. "We need get to the bottom of this, now that we're in this situation, we need to fully understand what happened."

The Republican challenging Smith for her seat, former congressman Jason Lewis, has taken a different view — calling for a "swift acquittal."

Pressure is increasing on senators to call former national security adviser John Bolton to testify the at the trial. The draft of Bolton's new book says the president told Bolton he wanted to withhold hundreds of millions of dollars in security aid from Ukraine until it helped him with investigations into political foe Joe Biden. The president denies he said that.