We’ve been hearing a lot about the “quid pro quo.” But this week, Democrats started using a new term, one that shows up in the impeachment clause of the Constitution, to describe President Trump’s actions toward Ukraine. Republicans started using it, too — to reject it. “The Latest” is a new series on the impeachment inquiry, from the team behind “The Daily.” You can find more information about it here.

On the first day of public hearings in the Trump impeachment inquiry, lawmakers questioned two diplomats, and laid out two competing narratives about the investigation. This is the first episode in our new series on the impeachment inquiry. For more information, visit nytimes.com/thedaily.