The Mueller investigation and the impeachment inquiry dominated headlines in 2019 — overshadowing the Justice Department's efforts on another national security front: combating Chinese espionage.

Critics inside and outside officialdom are calling for, at very least, the FBI to validate its practices in requesting surveillance. Will congressional action follow?

The secret court that oversees foreign intelligence work rebuked the FBI and Justice Department, essentially asking for the government to prove why its judges should believe what they submit.

Donald Trump's former deputy campaign chairman, a protege of Paul Manafort, has provided important evidence to investigators and prosecutors in the Russia investigation and beyond.

Two days after he delivered his report, Justice Department watchdog Michael Horowitz testified before Congress on Wednesday.

The Justice Department's internal watchdog determined the FBI had sufficient evidence to open the Russia probe but criticized the bureau over its surveillance of a former Trump campaign adviser.

Inspector General Michael Horowitz's report enumerates multiple issues with the FISA application for former Trump aide Carter Page.

The Justice Department's independent inspector general is set to release the findings of his 20-month review of the early stages of the Russia probe.

The House Intelligence Committee report revealed calls between the White House and Rudy Giuliani, and between Devin Nunes, the committee's ranking Republican, and a Giuliani associate.

The pair of Soviet-born business contacts was indicted in connection with alleged campaign finance violations. They had a status conference in their case on Monday in New York City.

A federal judge in Washington, D.C., ruled Monday that President Trump's former White House Counsel Don McGahn has to comply with a congressional subpoena and testify before lawmakers.

Impeachment hearings continued on Thursday with testimony from David Holmes, a foreign service officer based in Kyiv, and Fiona Hill, a former NSC senior director for Europe and Russia.

Impeachment hearings continued Wednesday, with Gordon Sondland, President Trump's ambassador to the European Union, taking questions about his involvement pressing Ukraine for investigations.

Witnesses on the third day of public hearings in the impeachment inquiry include Alexander Vindman, Tim Morrison and Jennifer Williams, first hand witnesses to President Trump's July 25 call.

Stone faced charges that he lied to congressional investigators and obstructed an official proceeding. He pleaded not guilty and said he had done nothing wrong.

A recap and analysis of the first day of public hearings in the impeachment inquiry of President Trump.

As the House impeachment inquiry goes public, one central figure who will not be heard from is Rudy Giuliani. His name appears more than 500 times in transcripts of closed-door testimony made public.

One year after the ouster of Jeff Sessions, it's become clear that his replacement, William Barr, enjoys the president's confidence in a way Sessions never did. Not everyone is pleased.

When he was appointed attorney general, William Barr inherited the Mueller probe. Since then, he has won the confidence of President Trump but Democrats view him with deep suspicion.

The trial of former Trump Campaign associate and longtime political operative Roger Stone got underway on Tuesday.