Ryan Lucas

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Updated at 5:43 p.m. ET

After days of buildup amid a political firestorm, House Republicans released a controversial memo on Friday that alleges the FBI abused its surveillance authority to target a former foreign policy adviser to the Trump campaign.

The memo also has shed more light on the broader Russia case and confirmed or advanced other aspects of the story beyond the GOP's campaign against the FBI and Department of Justice.

Updated at 3:34 p.m. ET

President Trump could notify Congress as soon as Friday that he endorses releasing the controversial memo that alleges the FBI and Justice Department abused their surveillance powers.

That would set the stage for it to become public, perhaps that afternoon, although the procedure is unclear.

Democrats went on the attack Thursday trying to stop the process and even to get rid of the man who has driven it, Trump ally Devin Nunes, the Republican chairman of the House intelligence committee.

Updated at 3:30 a.m. ET Thursday

The FBI clashed with the White House on Wednesday over the much discussed Republican memo that alleges the bureau abused its surveillance powers. The bureau said it has "grave concerns" about the "accuracy" of the document that the president supports making public.

Meanwhile, the ranking Democrat on the House intelligence committee, which voted to release the memo, says Republicans secretly made "material changes" to the document after the decision to make it public.

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