Christopher A. Wray, the F.B.I. director, is predicted to confront a rare political storm on Wednesday when he testifies earlier than Congress, with Republicans who as soon as defended the bureau now denouncing it as a weapon wielded in opposition to former President Donald J. Trump and his supporters.

Mr. Wray, who’s showing for the primary time earlier than the House Judiciary Committee since Republicans received the House, is probably going girding for the worst. The committee, led by Representative Jim Jordan, Republican of Ohio, says it “will examine the politicization” of the F.B.I. beneath Mr. Wray and Attorney General Merrick B. Garland.

Stoked by Mr. Trump, congressional Republicans have adopted an more and more caustic tone of their criticism of the nation’s premier regulation enforcement company, attempting to wreck the bureau’s legitimacy and undermine its standing with the general public.

That criticism was as soon as skilled on the bureau’s investigation into the Trump marketing campaign’s ties to Russia through the 2016 election. It is now targeted on different flash factors: Mr. Trump’s indictment in an inquiry into his dealing with of categorized paperwork; the F.B.I.’s function within the search of the previous president’s Mar-a-Lago property final August, as a part of that inquiry; unfounded claims of a “two-tiered” system of justice favoring Democrats; and the Justice Department’s plea settlement with the president’s son, Hunter Biden.

So far, Republicans haven’t offered proof that the Federal Bureau of Investigation and Mr. Wray are partisan, however they may attempt to catch Mr. Wray off stability and seed doubt about his motives.

Here is what to search for:

How will Mr. Wray reply?

Mr. Wray infuriated Mr. Trump, who considered the director’s declaration of independence as disloyalty. But Mr. Wray has beforehand testified earlier than Congress, steadfastly defending the F.B.I. as nonpartisan and taking Twitter hearth from Mr. Trump, who was president on the time.

Mr. Trump appointed Mr. Wray in 2017 after he fired James B. Comey, who as F.B.I. director had opened the Russia investigation. Since then, Mr. Wray has been beneath fixed strain from Republicans, who’ve concurrently decried lawlessness in Democrat-run cities whereas attacking the F.B.I.’s function in political investigations.

In the previous, Mr. Wray has responded to assaults by parsing his phrases rigorously. In his opening assertion, he’s anticipated to forcibly defend the F.B.I. and decline to debate open investigations, which is the coverage of the Justice Department.

“The work the men and women of the F.B.I. do to protect the American people goes way beyond the one or two investigations that seem to capture all the headlines,” he’s anticipated to say, in keeping with ready remarks.

Republicans are going to struggle.

Mr. Trump and his supporters — in addition to a vocal group of former F.B.I. officers who’ve aligned themselves with Republicans in Congress — consider the federal government is attempting to silence and punish conservatives and see the bureau as a harmful extension of that effort.

Case in level: In January, House Republicans voted to research regulation enforcement, creating the Select Subcommittee on the Weaponization of the Federal Government.

Republicans have claimed that the F.B.I. prodded Twitter to discriminate in opposition to their occasion in addition to conservative or right-wing protesters in school board conferences and abortion clinics. Those points have proved to be highly effective drivers of voter turnout within the occasion’s pro-Trump base.

The subcommittee is led by Mr. Jordan, a detailed ally of Mr. Trump’s.

Mr. Trump and his supporters have promoted the concept that the Mar-a-Lago search was supposed to neutralize his electoral probabilities.

Mr. Trump and his allies have raged at his indictment and the search of Mar-a-Lago in August, when F.B.I. brokers descended on his residence and uncovered a whole lot of categorized paperwork.

The former president and his supporters have stated that Mr. Trump declassified the information, that means there was no misconduct to begin, and that the search was an instance of an uneven software of justice.

But to date no proof has emerged that the paperwork have been declassified or that the search, which was authorised by a federal decide, was improper or politically motivated. In reality, the search unfolded after Mr. Trump repeatedly resisted the federal government’s requests that he return the material.

In latest weeks, Steven D’Antuono, the previous prime F.B.I. agent overseeing the paperwork case, testified behind closed doorways earlier than Mr. Jordan.

Asked if “anyone was motivated by animus” within the paperwork investigation, Mr. D’Antuono stated no, in keeping with a transcript of his testimony.

Hunter Biden reached a plea deal. Republicans hate it.

Under the cope with the Justice Department, Mr. Biden agreed to plead responsible to misdemeanor counts of failing to pay his 2017 and 2018 taxes on time and be sentenced to probation. The division additionally stated it might not prosecute him for getting a handgun in 2018 throughout a interval when he was utilizing medication.

Republicans have assailed the deal, calling it too lenient, regardless that years of investigation by a Trump-appointed U.S. legal professional discovered proof solely to cost Mr. Biden on the slim tax and gun points, fairly than the wide-ranging worldwide conspiracies peddled by Mr. Trump and his allies.

That U.S. legal professional, David C. Weiss, who signed off on the settlement, has additionally come beneath hearth. On Monday, Mr. Weiss rebutted a key element of testimony to Congress by an Internal Revenue Service official who stated that Mr. Weiss had complained about being blocked from pursuing extra critical expenses.

Republicans will declare the Durham investigation confirmed that the F.B.I. was politically motivated in pursuing its Russia inquiry.

A last report by John H. Durham, the Trump-era particular counsel, regarded on the origins of the F.B.I.’s investigation into any ties Mr. Trump’s marketing campaign had with Russia however discovered no proof of politically motivated misconduct.

Mr. Trump and his loyalists had lengthy insisted that Mr. Durham’s investigation would unearth a “deep state” conspiracy supposed to wreck him politically, however Mr. Durham by no means charged high-level authorities officers.

Instead, Mr. Durham developed solely two peripheral circumstances involving accusations of creating false statements, each of which resulted in acquittals, whereas utilizing his report back to cite flaws within the F.B.I.’s early investigative steps that he attributed to affirmation bias.

Still, Mr. Durham’s report has continued to gas Republican claims of bias, with some accusing the F.B.I. of creating strikes motivated by political favoritism. That cost is nearly sure to resurface throughout Mr. Wray’s testimony.

Will Americans belief the F.B.I.?

Republicans have claimed the Justice Department is “weaponized” in opposition to conservatives, however the allegations that have been introduced forth by aggrieved former F.B.I. officers have foundered.

Instead, Democratic investigators have uncovered that these former F.B.I. officers have trafficked in right-wing conspiracy theories, together with in regards to the Jan. 6, 2021, assault on the Capitol, and acquired monetary assist from a prime ally of Mr. Trump.

But the back-and-forth is having an impression. Mr. D’Antuono, in his testimony, rebuffed allegations of political bias and rejected calls to defund the bureau — however expressed concern in regards to the future

“In my opinion,” he stated, “the more the American people hear about not trusting the F.B.I., it’s not a good day for this country.”