Investigations Read the latest from NPR's investigative team. If you have solid tips or documents on stories we should probe, please send them to us.

Investigations

Monday

Ramapo police officers escort Grafton E. Thomas from Ramapo Town Hall to a police vehicle on Sunday. Thomas is accused of stabbing multiple people as they gathered to celebrate Hanukkah at a rabbi's home in the Orthodox Jewish community north of New York City. Julius Constantine Motal/AP hide caption

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Julius Constantine Motal/AP

Monday

Senate Majority Leader Mitch McConnell, right, and Senate Minority Leader Chuck Schumer wait on stage together at the University of Louisville's McConnell Center before Schumer's scheduled speech last year. Bill Pugliano/Getty Images hide caption

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Bill Pugliano/Getty Images

Wednesday

House Speaker Nancy Pelosi, seen departing a press conference following the House vote Wednesday, said she was ready to send the articles of impeachment once she has more information about the contours of a Senate trial. Win McNamee/Getty Images hide caption

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Win McNamee/Getty Images

Rep. Alcee Hastings, D-Fla., attends a meeting of the House Committee on Rules to consider the resolution to impeach President Trump on Capitol Hill in Washington on Tuesday. Erin Schaff/AP hide caption

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Erin Schaff/AP

Tuesday

Chuck Coma in his mother's kitchen. Since his return from a federal prison in Butner, N.C., he experiences flashbacks from war and his time in jail. Peter van Agtmael/Magnum Photos hide caption

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Peter van Agtmael/Magnum Photos

When A Prisoner Returns Home With A Brain Injury, Freedom Isn't So Free

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Thursday

The Trump International Hotel in Washington, D.C., is the focus of one of three pending lawsuits claiming the president is violating the Constitution by not divesting from his business empire. Michael Brochstein/SOPA Images/LightRocket via Getty Images hide caption

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Michael Brochstein/SOPA Images/LightRocket via Getty Images

Wednesday

The impeachment proceedings against President Trump have featured testimony by U.S. Ambassador to the European Union Gordon Sondland on a key cellphone conversation with Trump regarding Ukraine. Sondland is seen here being sworn in last month. Susan Walsh/AP hide caption

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Susan Walsh/AP

Presidential Impeachments Mirror Technological Advances; This Time, It's Smartphones

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Tuesday

Attorney Charles Cooper, representing former national security aide Charles Kupperman (center) departs federal court in Washington in October. On Tuesday, Cooper asked a federal court to keep alive a lawsuit centered on a now-withdrawn subpoena filed by House Democrats that sought Kupperman's testimony as part of the impeachment inquiry. Bloomberg via Getty Images hide caption

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Bloomberg via Getty Images

Sunday

Jeff Jonas sits at a computer, creating software that not only tracked the fish from The Mirage but allowed the casino to make better decisions about how it stocked the tank. Eventually, this system would become known as Non-Obvious Relationship Awareness — NORA. Olivia Fields for NPR hide caption

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Olivia Fields for NPR

Can A Computer Catch A Spy?

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Thursday

White House counsel Pat Cipollone waits for his car as he leaves the Capitol after attending the Senate Republicans' lunch Wednesday. Bill Clark/CQ-Roll Call Inc via Getty Images hide caption

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Bill Clark/CQ-Roll Call Inc via Getty Images

Wednesday

Zoƫ van Dijk for NPR

Student Loan Borrowers With Disabilities Aren't Getting Help They Were Promised

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Monday

Attorney General William Barr opposes the release of secret grand jury material from then-special counsel Robert Mueller's investigation into Russian interference in the 2016 election. Patrick Semansky/AP hide caption

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Patrick Semansky/AP

Wednesday

Mark Sandy, from the Office of Management and Budget, arrives to the U.S. Capitol earlier this month for a deposition regarding whether President Trump ordered a hold on military assistance to Ukraine. Sarah Silbiger/Getty Images hide caption

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Sarah Silbiger/Getty Images

Thursday

Scott Warren (center) of Ajo, Ariz., celebrates with his attorneys Amy Knight and Greg Kuykendall outside court in Tucson, Ariz., on Wednesday. Astrid Galvan/AP hide caption

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Astrid Galvan/AP

Wednesday

Federal prosecutors say former Baltimore Mayor Catherine Pugh used her series of self-published Healthy Holly children's books to enrich herself, boost her political career and evade taxes. Patrick Semansky/AP hide caption

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Patrick Semansky/AP