The Senate will soon have one less Republican who, at times, was critical of President Trump, as Louisiana Senator Bill Cassidy lost his primary over the weekend, and now a key primary today for another Trump critic, as Kentucky Republican Congressman Thomas Massie is facing off against former Navy SEAL Ed Gallrein. He's being backed by the president. Western Kentucky Political Science Professor Dr. Scott Lasley talks about the primary with L.A.'s Morning News.