The whistleblower complaint alleges President Trump abused the power of his office to try to get Ukraine's help in the 2020 campaign, and that the White House tried to cover it up.

The newly released whistleblower complaint alleges that White House officials tried to hide records of President Trump's phone call with his Ukrainian counterpart.

The Trump administration releases a memo of a call between President Trump and Ukraine's leader. A big question: did Trump pressure the Ukrainian president to investigate a political opponent?

The Justice Department releases information relating to a controversial presidential conversation with a foreign leader: a record of notes and recollections, not a verbatim transcription of the call.

President Trump asked his Ukrainian counterpart to see what he could find out about former Vice President Joe Biden and his family and to be in touch with Trump's lawyer and the attorney general.

President Trump's personal attorney, Rudy Giuliani, met with an adviser to the Ukrainian president to urge Kiev to investigate Hunter Biden. Is this sort of pressure proper, improper or illegal?

What was so concerning that a U.S. intelligence official filed a whistleblower complaint? That's the question in Washington. When asked about it, President Trump tried to put the focus on Joe Biden.

Chinese intelligence officers like to use the professional social network — in which people often accept pings from strangers — to recruit sources within the U.S. government.

Three ex-U.S. intelligence officers recently were convicted or pleaded guilty to spying for China, and the Justice Department brought almost a dozen more cases related to Chinese economic espionage.

Corey Lewandowski testifies before the House Judiciary Committee as part of its investigation into possible articles of impeachment against the president.

The FBI and other intelligence and security agencies say they're combing the active measures playbook run against the 2016 presidential election to defend the next one.

The 2020 election may seem like a long way off. But, in fact, the campaign has already kicked off. So with the clock already ticking, what are federal officials doing about foreign interference?

Greg Craig, a long-serving Democrat who epitomized the Washington insider power lawyer, was acquitted in one of the cases to spin out of the Russia investigation.

The Justice Department's internal watchdog says former FBI Director James Comey violated department and FBI policies in his handling of memos he wrote detailing his conversations with President Trump.

The Justice Department's Inspector General finds former FBI Director James Comey violated policy by sharing classified information with individuals outside of the FBI. The DOJ declined prosecution.

It's been 16 years since Kathleen Hawk Sawyer was in charge of the federal Bureau of Prisons. On big change is that the prison population has jumped from 65,000 in 1992 to 177,000 in 2019.

Even as civil libertarians warn about the increased use of facial recognition by federal authorities, the bureau is using it to track down some of its most wanted suspects.

Jeffrey Epstein, the wealthy financier awaiting trial on sex trafficking charges, was found dead inside a Manhattan jail cell Saturday by an apparent suicide.

The trial of Greg Craig, who worked for two Democratic presidents, opens in Washington, D.C., on Monday. The case against Craig stems from former special counsel Robert Mueller's investigation.

Recent shootings have raised questions about how law enforcement can prevent such attacks. The FBI says it's challenging to identify and investigate the evolving threat of domestic terrorism.