President Trump and former Vice President Joe Biden exchanged political jabs this week in Iowa.
On this politics day edition of River to River, host Ben Kieffer is joined by political scientists Jim McCormick of Iowa State University and Tim Hagle of the University of Iowa for a closer look at these high profile visits.
They also discuss Iowa ethanol and what it means for the president and other 2020 hopefuls, protests in Hong Kong over extradition laws, and former Nixon White House Counsel John Dean's testimony before Congress.