Barr Installs Outside Prosecutor to Review Case Against Michael Flynn, Ex-Trump Adviser  —  Amid turmoil in the U.S. attorney's office in Washington, the attorney general has also sent outside prosecutors to review other politically sensitive cases.  —  WASHINGTON — Attorney General William P. Barr …

Sanders holds lead heading into Nevada's Democratic caucuses, poll finds  —  Vermont Sen. Bernie Sanders leads the presidential field by a solid margin among likely Democratic caucusgoers heading into Nevada's four-day early voting period, but all six of the candidates actively campaigning …

Bill de Blasio Plans to Endorse Bernie Sanders  —  The New York City mayor, who was briefly a presidential candidate himself, is expected to travel with Mr. Sanders in Nevada in the coming days, according to people familiar with the plans.  —  Mayor Bill de Blasio of New York …

Michael Avenatti guilty on all counts in Nike extortion case  —  Avenatti was arrested in March, about 15 minutes after tweeting that he had scheduled a press conference to “disclose a major high school/college basketball scandal perpetrated by @Nike.”  —  Lawyer Michael Avenatti …

Border Patrol Will Deploy Elite Tactical Agents to Sanctuary Cities  —  Agents from a special tactical team that normally confronts smugglers on the border are being sent to sanctuary cities across the country.  —  The Trump administration is deploying law enforcement tactical units …

She pushed Trump to exit the Paris climate agreement and roll back environmental rules.  And she's returning to EPA as chief of staff.  —  One of EPA's first Trump appointees, Mandy Gunasekara has run a ‘pro-Trump nonprofit’ since leaving the agency a year ago.

We Checked the Iowa Caucus Math.  Here's Where It Didn't Add Up.  —  Caucus volunteers tally the final round votes.  Then they divide the county delegates among the viable candidates based on their vote shares.  —  They must round down or up to the nearest whole number to award the delegates.

Trump just got bad news from Neil Gorsuch's mentor in a big Medicaid case  —  Judge David B. Sentelle testified at the Senate Governmental Affairs Committee hearing on the future of the Independent Counsel Act in 1999.  Douglas Graham/Congressional Quarterly/Getty Images  —  When you've lost David Sentelle ...

Culinary Union officials face profanity-laced attacks after scorecard says Sanders would ‘end’ their health care  —  Geoconda Arguello-Kline, left, secretary-treasurer for the Culinary Union announced that the culinary will not endorse a Democratic presidential candidate in the primary.

Army won't investigate Vindman over impeachment testimony, top leader says  —  The Army will not investigate Lt. Col. Alexander Vindman, the former National Security Council staffer who testified in the president's impeachment investigation, the service's top civilian said Friday.

Boris Johnson has cancelled his planned trip to the White House after Trump slammed the phone down on him in a moment of ‘apoplectic’ fury  — UK Prime Minister Boris Johnson has cancelled his planned trip to meet Donald Trump next month after a furious row between the two men.

No, radical policies won't drive election-winning turnout  —  No myth is stronger in progressive circles than the magical, wonderworking powers of voter turnout.  It's become a sort of pixie dust that you sprinkle over your strenuously progressive positions to ward off any suggestion that they might turn off voters.

U.S. Readied Sanctions on Russian Oligarch's Associates—Then Mysteriously Backed Off  —  “Somebody overruled [Treasury], essentially,” one sanctions expert said.  “That's the most likely scenario.”  —  Something strange happened in mid-December involving Oleg Deripaska, the Russian oligarch.