Whitaker as acting AG could change Mueller's Russia probe

President Donald Trump has tapped Matthew Whitaker to take the helm of the Justice Department until Jeff Sessions’ permanent successor can be confirmed by the Senate. However, some legal experts argue the move is unconstitutional. MSNBC’s Frances Rivera discusses this reasoning with Glenn Kirschner, MSNBC legal analyst and former prosecutor, Josh Lederman, NBC news national political reporter, and Craig Unger, author of "House of Trump, House of Putin."