"The diversity of Mueller’s hires reinforces early signs that the investigation is going to be broader than some expected. So far, indications are that Mueller has his eyes on Trump campaign chair Paul Manafort’s pro-Kremlin activities, former national security advisor Michael Flynn’s work as an unregistered foreign agent, as well as poking around Trump’s actions when it comes to Comey’s dismissal. There have also been indications that Mueller will look into business interests of Trump and son-in-law Jared Kushner, a prospect that may be the most daunting to the White House. Mueller’s biggest hire to date was [Andrew] Weissmann, who is taking a leave from his current post leading the Justice Department’s criminal fraud section. The two men have a long history together at the FBI, where Weissmann served as both the bureau’s general counsel from 2011 to 2013 and as Mueller’s special counsel in 2005. Weissmann was instrumental in going after Enron CEO Ken Lay and also in breaking up New York crime families. His position at the heart of Mueller’s team suggests what kind of case this is going to be."