Acting Attorney General Matthew Whitaker heads to Capitol Hill, after House Judicial Committee Chair Rep. Jerry Nadler (D-CA) dropped a subpoena threat. Plus, Jeff Bezos accuses The National Enquirer of blackmail and extortion, after the tabloid threatened to publish scandalous photos of his affair. And Ariana Grande is one of the hottest artists on the planet, but when it comes to the Grammys, she's saying, "thank u, next."