'Very strong argument that Halligan's appointment is illegal': Ex-U.S. attorney

A lot for us to dig into. MSNBC senior national security reporter David RH is here on set with me and thankfully an MSNBC person officially. Mark Leovich, staff writer at The Atlantic.He's also an MSNBC political contributor. And Barbara McQuade, a former US attorney and professor at the University of Michigan Law School. She's also an MSNBC legal analyst, pros one and all.David, I'll come to you first. Just walk us through what we can expect from Comey today. um was mentioned already, but it's a it's a mot ...