Facebook, Google and Twitter appeared in a Capitol Hill marathon before Senate and House Intelligence Committees. The public got a clearer view of how Russia operated online to interfere in 2016.

Justice Department special counsel Robert Mueller unveiled his first charges in the Russia imbroglio on Monday. Three former Trump aides were involved, and members of Congress have said they want to pass a bill protecting Mueller from being fired by Trump if the president feels threatened.

Three people have been indicted by Special Counsel Robert Mueller's investigation, including former Trump Campaign Manager Paul Manafort. NPR Justice correspondent Ryan Lucas has the latest.

Trump's former campaign chairman and a top aide are charged with money laundering; a former foreign policy aide has pleaded guilty to lying to FBI.

Some news organizations are reporting — but NPR hasn't confirmed — that special counsel Robert Mueller has secured his first indictment. Other developments in the Russia probes are expected this week.

The president and his allies argue that since Hillary Clinton paid for the infamous dossier, that means it's a political hatchet job and so is the Russia imbroglio.

Attorney General Jeff Sessions testified before the Senate Judiciary Committee today. There was no shortage of topics discussed — from police oversight and voting rights litigation to protections for the LGBT community and the administration's travel ban. But Democrats repeatedly pushed him on one topic in particular — Russia.

Since the recent mass shooting in Las Vegas, new scrutiny has fallen on the controversial firearm device. Experts in the field say there are limits to what the ATF can do under existing law.

Senate Investigators do not yet know whether anyone in the U.S. knowingly cooperated with the Russian influence campaign during the 2016 election.

Law enforcement authorities say a motive in Sunday's mass shooting in Las Vegas is unclear. Authorities are searching the suspect's home in Mesquite, Nev., for clues.

The program used to combat foreign threats will expire at the end of the year unless Congress renews it. Republicans and Democrats say they're likely to reauthorize it, but many want changes.

Congressional investigators are continuing to talk with social media companies about what is known about the role Russian bots played in last November's election and how to prevent the next onslaught.

Attorney General Jeff Sessions condemned what he derided as political correctness gone wild on university campuses across the U.S., but especially the University of California, Berkeley. Protestors have taken to shouting down speakers and even shutting down campuses, in some cases, over controversial topics.

The move, announced by Attorney General Jeff Sessions on Monday, is part of a push to boost federal support for local police departments and crack down on crime. It reverses an Obama-era restriction.