'Red line': Trump legal ally threatens to make Senate Republicans' 'political lives hell'
Republican U.S. Senator John Thune (R-SD), who was elected to become the next Senate Majority Leader, speaks to the media after a U.S. Senate Republicans meeting to vote on leadership positions for the 119th Congress, on Capitol Hill in Washington, U.S., November 13, 2024. REUTERS/Leah Millis

Donald Trump on Saturday announced he would appoint Kash Patel to be director of the FBI, causing outrage among critics and leading to a pre-emptive strike to Senate Republicans from an ally of the president-elect.

Former GOP staffer Mike Davis has made headlines for his social media comments in the past, and was rumored to be on Trump's list for attorney general.

After Trump announced Patel's pending nomination, Davis congratulated Patel.

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"Cheers to my friend and fellow warrior, Kash Patel. He is President Trump’s perfect choice to serve as the next FBI director. Kash will bring much-needed reforms to a badly broken and corrupt agency," Davis wrote on social media, noting that his legal group Article III Project "will ensure he wins Senate confirmation."

"Justice is coming," he then said.

In a follow-up post in which Davis shared a list of Patel's credentials, including that he served as the Chief of Staff to the Department of Defense, he published a letter to Senate Republicans.

"Dear Senate Republicans: Kash Patel is unquestionably qualified to serve as the FBI director. And he has overwhelming support from your allies," the attorney wrote. "Don’t even think about voting against him. We will make your political lives hell if you do. Red line."

Davis added, "Cheers," from his organization.