Rep. Barr WAVE 3 Interview on Horseracing Integrity Act September 4, 2020 Rep. Barr takes part in an interview with David Mattingly to discuss the Horseracing Integrity Act in the buildup to the 146th Kentucky Derby. Permalink: https://barr.house.gov/2020/9/rep-barr-wave-3-interview-on-horseracing-integrity-act