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House Intelligence Committee Chairman Adam Schiff speaks to the media in the Capitol Visitor Center last Monday. Photo: Tom Williams/CQ-Roll Call, Inc via Getty Images

House Intelligence Chairman Adam Schiff said in a letter Saturday that the whistleblower's testimony is "redundant and unnecessary" because the impeachment inquiry has gathered evidence that "not only confirms, but far exceeds" information in the original complaint.

Why it matters: Schiff's letter to Rep. Devin Nunes, the top Republican on the House Intelligence Committee, comes after Nunes complained that Democrats had yet to treat President Trump with "fairness" in the impeachment process, directing witnesses not to answer questions from GOP committee members and withholding transcripts.

In light of the President's threats, the individual's appearance before us would only place their personal safety at grave risk."

Read the letter:

Go deeper: Schiff rebuffs call for Bidens, whistleblower to testify in impeachment probe

Go deeper

Rep. Dan Crenshaw says he'll be blind for a month after eye surgery

Rep. Dan Crenshaw (R-Texas) in Washington, D.C., in December 2020. Photo: Tom Williams/CQ-Roll Call, Inc via Getty Images

Rep. Dan Crenshaw (R-Texas) said in a statement Saturday he will be blind for roughly a month after getting surgery to reattach the retina in left eye.

Why it matters: Crenshaw, who lost his right eye and sustained severe damage to his left eye during his third deployment to Afghanistan in 2012, said he will be "pretty much off the grid for the next few weeks."

Miriam Kramer, author of Space
3 hours ago - Science

NASA's Mars helicopter is a test for the future of space exploration

Ingenuity (left) with Perseverance on Mars. Photo: NASA/JPL-Caltech/MSSS

NASA is set to fly the first test flight of its tiny Ingenuity helicopter on Mars Sunday, marking the advent of drones for space exploration.

Why it matters: If successful, this flight will be the first time a human-built aircraft has flown on a world other than Earth, opening the door to new means of exploring planets far from our own.

Bryan Walsh, author of Future
4 hours ago - Politics & Policy

The global future is looking dark and stormy

Illustration: Rae Cook/Axios

A new 20-year-forecast for the world: increasingly fragmented and turbulent.

The big picture: A major report put out this week by the National Intelligence Council reflects a present rocked by the COVID-19 pandemic. How the next two decades will unfold depends largely on whether new technologies will ultimately unite us — or continue to divide us.