Dr. Jason Johnson discusses the possible fight for the next 2 #SCOTUS seats and the top Democratic leaders to run against President Trump for the 2020 election: VP Joe Biden? Cory Booker? Elizabeth Warren? Kamala Harris? Bernie Sanders? Other panel members are Susan Del Percio (Republican Strategist), Charlie Cook ( The Cook Political Report), Heidi Przybyla (NBC News), and host, Chris Matthews.