President Trump's impeachment defense team concluded their arguments with time to spare Tuesday. White House counsel Pat Cipollone said the two articles of impeachment — abuse of power and obstruction of Congress — "fall far short of any constitutional standard."Democrats continue to push for an agreement on witnesses; in particular, they hope to hear from former national security adviser John Bolton. According to a report in the New York Times, Bolton alleges in a forthcoming book that President Trump expressly linked aid to Ukraine to investigations into family of former Vice President Joe Biden.The impeachment trial will resume tomorrow afternoon, the beginning of a two-day question-and-answer period.This episode: White House correspondent Tamara Keith, and congressional correspondents Susan Davis and Kelsey Snell.Connect:Subscribe to the NPR Politics Podcast here.Email the show at nprpolitics@npr.org.Join the NPR Politics Podcast Facebook Group.Subscribe to the NPR Politics Newsletter.Find and support your local public radio station.