Robert Mueller’s “Pit Bull” Andrew Weissmann is stepping down from the Special Counsel probe into the Trump campaign and Russia–a possible sign that the investigation could be winding down.

PBS reports, “Andrew Weissmann, the architect of the case against former Trump campaign chairman Paul Manafort, will study and teach at New York University and work on a variety of public service projects, including his longstanding interest in preventing wrongful convictions by shoring up forensic science standards used in courts, the sources added. The departure is the strongest sign yet that Mueller and his team have all but concluded their work.”

After it was announced that Weissmann would join the Mueller investigation in 2017, it was revealed that he attended Hillary Clinton’s 2016 election night party.

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Breitbart points out that Weissmann donated thousands of dollars to the Democratic party. “Records show Weissmann donated $2,350 to the Obama Victory Fund in 2008, and contributed $2,000 to the DNC in 2006,” writes the site.

Weissmann joined the Enron Task Force in 2002 and eventually became the director where he aggressively prosecuted the accounting firm Arthur Andersen LLP, resulting in the loss of 85,000 jobs worldwide. Several years later, the Supreme Court unanimously reversed the conviction.

Former DOJ prosecutor Sidney Powell says Weissmann “creatively criminalized a business transaction between Merrill Lynch and Enron. Four Merrill executives went to prison for as long as a year. Weissmann’s team made sure they did not even get bail pending their appeals, even though the charges Weissmann concocted, like those against Andersen, were literally unprecedented.”

His prosecution destroyed the lives and families of the Merrill employees before the 5th Circuit Court of Appeals reversed the mass of the case.

“Weissmann quietly resigned from the Enron Task Force just as the judge in the Enron Broadband prosecution began excoriating Weissmann’s team and the press began catching on to Weissmann’s modus operandi,” Powell concludes.