From classif ied to unclassified

This timeline follows the controversial House Intelligence Committee memo that Republicans say reveals improper government surveillance during the 2016 presidential race:

APRIL 6, 2017

Rep. Devin Nunes, chairman of the Intelligence Committee, steps aside from leading the Russia investigation amid an ethics controversy over whether he inappropriately disclosed classified information.

AUG. 24, 2017

Despite stepping back from the Russia case, Nunes is investigating how law enforcement has handled the inquiry. He subpoenas records from the Justice Department.

DEC. 7, 2017

Nunes is cleared by the House Ethics Committee.

JAN. 3, 2018

FBI Director Christopher A. Wray and Deputy Atty. Gen. Rod Rosenstein appeal to House Speaker Paul D. Ryan to avoid turning over some sensitive records to Nunes, but Ryan backs up Nunes.

JAN. 18, 2018

The House Intelligence Committee votes to make the memo available to every member of the House.

JAN. 29, 2018

The House Intelligence Committee votes to release the memo, sending it to the White House for review.

JAN. 30, 2018

Trump is caught on a hot mic saying he “100%” wants to release the memo even though administration officials said he hadn't read it yet.

JAN. 31, 2018

The FBI publicly says it has “grave concerns” about the accuracy of the memo.

FEB. 1, 2018

A senior administration official says Trump will give the green light for the House to release the memo.

FEB. 2, 2018

The four-page memo is released.