Churches in the United States are barred from endorsing political candidates, or contributing to campaigns. This part of our tax code is known as the Johnson Amendment. It includes all non-profit organizations. But some Republicans, including President Trump, want to repeal the amendment as part of a federal tax overhaul happening now. We talk with researcher Matthew Boedy, an assistant professor at the University of North Georgia, and Susan Anderson, an accounting professor at Elon University in North Carolina.