Allies of President Trump Donald John TrumpUS reimposes UN sanctions on Iran amid increasing tensions Jeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Trump supporters chant 'Fill that seat' at North Carolina rally MORE have reportedly been assembling lists of government officials deemed to be disloyal to the president and have worked to find pro-Trump replacements for them.

Axios reported Sunday that the lists, which have become more important since Trump's acquittal in the Senate's impeachment trial, have been assembled by allies of the president outside the White House, including Ginni Thomas, wife to U.S. Supreme Court Justice Clarence Thomas Clarence ThomasREAD: Supreme Court justices mourn death of Ginsburg, 'an American hero' READ: Supreme Court justices offer tributes to Ruth Bader Ginsburg Senate Republicans face tough decision on replacing Ginsburg MORE.

The lists and memos of targeted officials have been compiled since 2018, according to the news outlet. One list reportedly compiled by conservative activists of Groundswell, an organization with which Ginni Thomas is affiliated, contained a list of State Department employees who should be fired, including John Sullivan, the current U.S. ambassador to Russia.

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At least one nomination for a top post at the Treasury Department, that of Jessie Liu, was withdrawn by the president over claims made by activists in memos reported by Axios, despite her recommendation for the post by Treasury Secretary Steven Mnuchin Steven Terner MnuchinLawmakers fear voter backlash over failure to reach COVID-19 relief deal United Airlines, unions call for six-month extension of government aid House Democrats plan to unveil bill next week to avert shutdown MORE.

It was unclear from the Axios report how many firings in the administration could be linked to the lists compiled by conservative activists, as Sullivan at least remains in his post. News of the memos comes as the president has taken a tougher stance against leaks and whistleblowers in his office since the end of his Senate trial, in recent days forcing out officials such as acting Director of National Intelligence Joseph Maguire Joseph MaguireCongressional Democrats request FBI briefing on foreign election interference efforts Wells Fargo told employees to delete TikTok from work phones Hillicon Valley: Pompeo floats TikTok ban | Civil rights groups slam Facebook after call | Election security funding included in proposal MORE, as well as former national security council official Lt. Col. Alexander Vindman Alexander VindmanImpeachment witness Alexander Vindman calls Trump Putin's 'useful idiot' The Hill's Morning Report - Sponsored by The Air Line Pilots Association - Trump, Biden renew push for Latino support Strzok: Trump behaving like an authoritarian MORE, who was involved in the impeachment inquiry. Vindman's brother, who was not involved in the inquiry, was also ousted.

The White House did not immediately return a request for comment.