Exclusive: Mitt Romney To Endorse Marco Rubio  —  The establishment wagons are circling.  —  Senior Political Reporter, The Huffington Post  —  COLUMBIA, S.C. — In a major development in the Republican presidential race, 2012 GOP nominee Mitt Romney will endorse Sen. Marco Rubio (R-Fla.) …

Police: Kzoo shooting suspect was Uber driver  —  KALAMAZOO, Mich. (WOOD) — The man suspected of shooting eight people in the Kalamazoo area, killing six, was an Uber driver who was apparently taking fares in between opening fire at various locations, police tell 24 Hour News 8.

Why Nevada was a bad sign for Bernie Sanders's “political revolution”  —  It was bad news for Bernie Sanders that he lost in Nevada Saturday.  But there may be a bigger crisis embedded in the loss: It suggested he isn't delivering on a key ingredient needed for his “political revolution.”

Looking Back  —  Antonin Scalia, who died this month, after nearly three decades on the Supreme Court, devoted his professional life to making the United States a less fair, less tolerant, and less admirable democracy.  Fortunately, he mostly failed.  Belligerent with his colleagues …

Requiem for the Bush Dynasty  —  An unrivaled political pedigree and $100-million war chest were not enough to overcome an undeniable fact: voters didn't buy what Jeb Bush was selling.  —  Even by the normal laws of Republican political physics, 2016 was never a lock to be Jeb Bush's year.

Black Lives Matter meetings run afoul of library's policy … NASHVILLE — Library officials have told Nashville's chapter of the Black Lives Matter movement that meetings restricting those who attend by race aren't allowed on public property.  —  The decision has outraged Black Lives Matter members.

Trump on Iraq comments: ‘Who knows what was in my head?’  —  Republican primary front-runner Donald Trump on Sunday said he does not know what he was trying to say during a 2002 interview in which he supported the Iraq invasion.  —  Asked if he was in favor of invading Iraq by radio show host Howard Stern …

Inside Jeb Bush's $150 Million Failure  —  Jeb Bush, the Republican establishment's last, best hope, began his 2016 campaign rationally enough, with a painstakingly collated operational blueprint his team called, with NFL swagger, “The Playbook.”  —  On page after page kept safe in a binder …

Trump Campaign Aggressively Tried To Hire Staffers From Koch Group  —  Late last year, Donald Trump's campaign aggressively courted top current and former staffers from a Koch-backed group in an effort to rapidly build up their national ground operation.  —  There was a reason …