'Red line': Trump legal ally threatens to make Senate Republicans' 'political lives hell'

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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"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.

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