WASHINGTON – While Democrats and the mainstream media claim President Donald Trump terminated FBI Director James Comey because of what he might have found in an Russia meddling probe, the fact there will be a new leader at the bureau may have unintended consequences for scandal-plagued and twice-failed candidate Hillary Clinton.

The investigation into her emails and the immunity deals granted to Clinton and her aides may be revisited, Brian Weidner, a veteran former FBI agent warns.

"I would be surprised if they did not review all the investigations regarding HRC and come up with [a] conclusion regarding prosecution. The statute of limitations hasn't come into play yet," Weidner said in an email to Fox News.

Amid the 2016 presidential race last summer, the FBI ended a massive investigation of Hillary Clinton's email server without charging a single person, even though Comey said then she'd been extremely careless with national security.

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After outlining the alleged crimes committed by the Democrat nominee for president, the FBI director said he couldn't find any evidence that Clinton meant to do what she did – there was no "intent," and therefore "no reasonable prosecutor" would charge her.

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While Comey testified on Capitol Hill that the decision not to pursue criminal charges against Clinton and her team for mishandling classified information was unanimous among the FBI agents on the case, he was criticized for going outside of his investigative lane, putting on his prosecutor's hat and making that recommendation against criminal charges.

In a rare admission, the acting FBI director Andrew McCabe on Thursday testified that morale within the bureau took a huge hit after Comey cleared Clinton.

"There were folks within our agency who were frustrated with the outcome of the Hillary Clinton case and some of those folks were very vocal about those concerns," McCabe said.

Critics claim McCabe is partisan because his wife took $700,000 for a 2015 state senate race in Virginia from Democrats, including long time Clinton aide, Virginia Gov. Terry McAuliffe.

And former State Department Inspector General Howard Krongard, who served as the State Department's inspector general from 2005 to 2008, is suspicious of how Comey led the email investigation.

The FBI's allocation of immunity deals to government officials – like key Clinton aides Huma Abedin, Bryan Pagliano, Cheryl Mills, John Bentel and Heather Samuelson – is "normally done in return for a proffer of evidence or testimony which will build a bridge from one level to a higher level," Krongard told Fox News. "In this case, the immunity grants built a moat around the higher level, not a bridge."

He said in this case, it appears there was "virtually nothing in return."

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In light of the dissatisfaction within the bureau following Comey's decision to let Clinton and her team walk away free, a new FBI director will likely be inclined to re-evaluate all aspects of the case against Clinton and invalidate offers of immunity that were previously granted to the former Democratic nominee and her associates, Weidner explained.

"A new AG and new director may take a good look at the entire case, and if anyone who received immunity did not live up to their agreement, like Huma [Abedin] with the classified documents on her computer, the deal is off and they are potential targets again," the former agent said.

Democrats allege Trump fired Comey because of his plans to investigate Russian interference in the 2016 campaign and potential ties to Trump associates. Yet, a detailed memo from Deputy Attorney General Rod Rosenstein recommending Comey be terminated cited his conspicuous handling of the Clinton email probe last year.

President Trump has repeatedly slammed Comey for the manner in which he handled the bureau's investigation into Clinton's email server, and characterized Comey as a "showboat and grandstander."

"Look, he's a showboat, he's a grandstander," Trump said Thursday in an interview with NBC. "The FBI has been in turmoil. You know that, I know that. Everybody knows that. You look at the FBI a year ago, it was in virtual turmoil – less than a year ago. It hasn't recovered from that."

Trump said he intended to fire Comey regardless of any recommendation from the Justice Department, but pointed out that "there's no good time to do it."

Trust the government? Maybe you shouldn't. Read the details in "Lies the Government Told You," by Judge Andrew Napolitano.