Donald Trump Donald John TrumpObama calls on Senate not to fill Ginsburg's vacancy until after election Planned Parenthood: 'The fate of our rights' depends on Ginsburg replacement Progressive group to spend M in ad campaign on Supreme Court vacancy MORE on Wednesday said that as president he would examine indicting Hillary Clinton Hillary Diane Rodham ClintonWhat Senate Republicans have said about election-year Supreme Court vacancies Bipartisan praise pours in after Ginsburg's death Trump carries on with rally, unaware of Ginsburg's death MORE over her private email server.

“Certainly that is something you would look at,” he told host Bill O’Reilly on Fox News’s “The O’Reilly Factor." "I would only do something 100 percent fair. You’d certainly have to look at it very fairly.”

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But Trump said that an indictment against Clinton for using a personal email server while serving as secretary of State is ultimately unlikely.

“I don’t think she will be indicted,” the GOP presidential front-runner said of his Democratic counterpart. “I think the Democratic Party will protect her. I think what she’s done is very, very serious. I think they’re a big part of her life story right now.”

Trump said that Sen. Bernie Sanders Bernie SandersKenosha will be a good bellwether in 2020 Biden's fiscal program: What is the likely market impact? McConnell accuses Democrats of sowing division by 'downplaying progress' on election security MORE (I-Vt.) must regret not using Clinton’s email controversy against her during their battle for the Democratic presidential nomination.

“He made a big mistake by not doing the emails,” he said, referencing Sanders’s quip last October that Americans were “sick and tired” of hearing about Clinton’s technology habits. "He wished he could do that over again. I don’t think that the emails are that nasty.”

The FBI formally confirmed in February that it is investigating Clinton’s private email server at the State Department.

FBI Director James Comey said earlier this month that his agency is in no hurry to finish its probe before the Democratic National Convention in Philadelphia in July.

“The urgency is to do it well and do it promptly,” he told The Niagara Gazette on April 5. "And ‘well’ comes first.”

Critics say Clinton’s use of a private server at State prevented accountability of her tenure and potentially exposed sensitive national intelligence.

At issue is whether 22 emails should have been classified at the highest level of “top secret” when they were sent.