The FBI was a bad idea from the start. From Charles C. W. Cooke of The National Review at archive.ph:

The bureau is a violent, expansionist, self-aggrandizing, and careless outfit that sits awkwardly within the American constitutional order.
In the New York Times this week, Bret Stephens complained that, in unholy conjunction with the Department of Justice, the FBI had disgraced itself yet again with its public smear of Representative Matt Gaetz. “I don’t like Gaetz’s politics or persona any more than you do,” Stephens told a characteristically bewildered Gail Collins. “But what we seem to have here is a high-profile politician being convicted in the court of public opinion of some of the most heinous behavior imaginable—trafficking a minor for sex—until the Justice Department realizes two years late that its case has fallen apart.”
Which . . . well, yeah. That’s what the FBI is for. Last week, a whistleblower named Kyle Seraphin told the Washington Times that the FBI had adopted “an entirely ridiculous internal process for determining every single national priority.” One must ask: “ridiculous” from whose perspective? Relative to the FBI’s stated mission, its behavior does indeed look “ridiculous.” Relative to its historical conduct, its behavior seems pretty standard. What the FBI did to Matt Gaetz is precisely what it did to Donald Trump. And what it did to Donald Trump is what it’s been doing since it was founded: namely, spying on, or attempting to discredit, anyone who irritates the powers that be.