Trump: West Texas shooting 'hasn't changed anything' on gun reform

In a new interview, Mitch McConnell says the future of gun reform legislation lies in the hands of the president. But McConnell has been blocking house-backed background checks since last February. Joining Andrea Mitchell is former U.S. attorney Joyce Vance, Politics Editor for The Daily Beast Sam Stein, and Former Senior Adviser to President Obama Neera Tanden, to discuss what could happen when Congress returns next week.Sept. 3, 2019