"A uniquely American disgrace"

Ayman Mohyeldin -- in for Nicolle Wallace -- discusses the latest from the shooting at Michigan State University, the growing fears of an environmental catastrophe in wake of a train derailment that released toxic fumes in Ohio, the newest challenger for the Republican nomination in 2024 and more. Joined by: Frank Figliuzzi, Kim Atkins Stohr, Tim Miller, Sen. Chris Murphy, Prem Thakker, Dr. Uche Blackstock, Joyce Vance, Rep. Eric Swalwell, Michael Steele, Michael Kranish, John Brennan and Raf Sanchez.