Navatek FBI bribery probe Capitol steakhouse dinner investigation

ProPublica: Trump’s FBI Purge Killed Navatek Bribery Probe That Reached Lindsey Graham and James Clyburn

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A sweeping FBI bribery investigation that had reached two of the most powerful lawmakers from South Carolina — Republican Lindsey Graham and Democrat James Clyburn — died quietly on the desk after President Donald Trump’s return to the White House, according to an explosive ProPublica investigation published Tuesday, October 20, 2026. The Navatek FBI bribery probe, which centered on whether a Hawaiian naval defense contractor bought its government contracts with campaign cash, was shut down when the Trump administration dismantled the Justice Department teams responsible for pursuing public corruption cases.

The account, built on thousands of pages of legal documents, internal company emails, FBI vetting files and dozens of interviews, describes what may be the most consequential casualty of the administration’s purge of federal law enforcement: an active, documented bribery case that implicated sitting members of Congress from both parties — and then simply evaporated. ProPublica reported that the FBI had formally named two former Navatek executives as subjects of the investigation and that agents told superiors the lawmakers themselves could become subjects as the inquiry progressed.

Graham’s camp dismissed the allegations as the “ravings of a convicted felon,” and Clyburn’s office rejected the story as well. But the reporting raises an unavoidable question two weeks before the midterm elections: when the agency that investigates corruption is stripped of the people who do the investigating, who gets to walk away? The Navatek FBI bribery probe is the case behind that question — and it never got an answer.

The ProPublica investigation: what the Navatek FBI bribery probe uncovered

The Navatek FBI bribery probe began, according to ProPublica’s account as reported Tuesday, with a remarkable admission: the chief executive of a naval defense research and development firm told federal agents that bribing public officials was his company’s business model. Martin Kao, the former CEO of Navatek, told FBI investigators that his firm’s business model consisted of paying off public officials in exchange for government contracts — and that much of the research Navatek delivered to the government was, in his own telling, worthless.

Kao’s account implicated lawmakers on both sides of the aisle. He told federal agents he bribed members of Congress from both parties, naming former Sen. Lindsey Graham (R-S.C.), Rep. James Clyburn (D-S.C.) and Rep. Joe Wilson (R-S.C.), according to reports on the ProPublica findings.

ProPublica says it unearthed the investigation by reviewing thousands of pages of legal documents, internal company emails, evidence the FBI used to vet Kao’s claims, and dozens of interviews — including with an eyewitness to the secret steakhouse dinner between Graham and Kao that sits at the center of the story. The details had not previously been reported.

The $40,000 steakhouse dinner: Graham’s alleged $10 million deal

The most detailed allegation in the Navatek FBI bribery probe concerns a March 2020 dinner at Charlie Palmer Steak in Washington, D.C. According to Kao’s account to the FBI, Graham agreed to attend the dinner for 45 minutes — but only after Kao committed $40,000 in campaign contributions.

At the face-to-face meeting, Kao told investigators, Graham agreed to direct a $10 million government contract toward Navatek. During that same meeting, Kao also pledged a total of $100,000 to Graham’s reelection campaign. Kao recounted to the FBI that Graham summed up the arrangement with an alleged quote: “This is how much I want, and how much I am going to give you.”

The FBI took Kao’s claims seriously enough to open a formal bribery investigation in early 2025, with Graham’s dinner as a main focal point, ProPublica reported. The agency took the formal step of naming two former Navatek executives who had worked with Kao — Duke Hartman and Joshua Knight — as subjects of the bribery investigation. Neither man was ever charged.

Crucially, the FBI did not designate Graham, Clyburn or Wilson as subjects of the investigation — but, according to records seen by ProPublica, agents on the Navatek FBI bribery probe were actively investigating the lawmakers’ interactions with Kao and told superiors the lawmakers could become subjects in the future.

Clyburn and the “cash-for-contacts” allegation

For Clyburn, one of the most influential Democrats in Congress, ProPublica described an alleged “cash-for-contacts” deal between Navatek and the congressman. Kao told investigators he made donation-for-contract arrangements with Clyburn and with Wilson as well, extending the alleged scheme beyond a single party and a single dinner.

The Navatek FBI bribery probe’s cross-party reach is what makes the case unusual — and politically explosive. It did not allege a partisan racket. It alleged a marketplace: campaign contributions on one side, defense appropriations on the other, with Navatek as the broker between them. Kao’s claim was that the firm’s money bought access in both directions.

A representative for Clyburn dismissed the story, and Graham’s representative denied the allegations, calling them the “ravings of a convicted felon” and “simply false.”

Martin Kao: the Navatek CEO behind the claims

The Navatek FBI bribery probe rose and fell on the word of Martin Kao — which is exactly why his credibility matters. Kao was sentenced to 87 months in prison after pleading guilty to a loan fraud scheme in 2022. Graham’s camp seized on that fact, labeling the allegations the product of a convicted felon trying to shrink his sentence.

But ProPublica reports that the FBI did not take Kao at his word. Agents spent months vetting his claims against Navatek’s own records — internal company emails, financial documents and the evidence investigators compiled — and matched enough of his account to formally open the Navatek FBI bribery probe and designate two company executives as subjects. The eyewitness account of the Charlie Palmer Steak dinner gave investigators an independent corroboration of the meeting itself.

That distinction matters: the Navatek FBI bribery probe was not an accusation that lived only in one man’s plea-bargain storytelling. It was a case the bureau had decided was real enough to pursue — until the pursuit itself was dismantled.

How Trump’s FBI purge killed the Navatek FBI bribery probe

The investigation went cold, ProPublica reported, after Trump was sworn in and effectively disbanded the Justice Department teams handling public corruption — barring the department’s anti-corruption section from pursuing new cases and purging career investigators and prosecutors from the FBI and the DOJ.

The mechanism, as one analysis of the ProPublica report put it, is administrative: anti-corruption work depends on trained agents and prosecutors who can build cases from witness cooperation and complex financial records. Remove those teams and the cases lose momentum. Complex investigations die on desks rather than in courts — not because the evidence collapsed, but because the people who knew how to prosecute it were gone.

That is precisely what appears to have happened here. An active inquiry with named subjects, an eyewitness, corroborating company records and a stated path toward designating sitting members of Congress as subjects never made it to court. The purge of the FBI’s corruption investigators did what no defense attorney could: it made the case disappear without anyone having to beat it.

The Navatek FBI bribery probe’s death is part of a broader pattern StateLineDaily has been tracking. As we reported, the DOJ opened an unprecedented antitrust investigation into five major news networks over their suspension of White House press pool duties — deploying the department’s machinery as an instrument of political pressure — while the career anti-corruption units that once pursued lawmakers were being emptied out. Read StateLineDaily’s full coverage of the DOJ’s investigation into ABC, CBS, CNN, Fox News and NBC here.

The denials: “ravings of a convicted felon”

The pushback from the lawmakers’ camps was swift and absolute. A representative for Graham denied the allegations in a statement to ProPublica, calling them the “ravings of a convicted felon” and “simply false.” A representative for Clyburn also dismissed the story.

To be clear about what the Navatek FBI bribery probe did and did not establish: Graham, Clyburn and Wilson were never designated as subjects of the investigation, and neither the company executives nor any lawmaker was charged. The allegations came from Kao’s account, and the FBI’s corroboration went as far as opening the case, naming company executives as subjects and documenting that the lawmakers could have become subjects. The bureau never got the chance to test Kao’s claims in court — because the case was killed before it got there.

That caveat is real, but it cuts both ways. The lawmakers never faced a jury, and the denials deserve their place in the record. But the investigation was never defeated by evidence or argument either. It was ended by reorganization — and reorganization does not exonerate anyone. That unresolved ending is why the Navatek FBI bribery probe still matters.

What competitors missed: the $9.5 million appropriation and Navatek’s $90 million ambition

Most coverage of the Navatek FBI bribery probe has fixated on the steakhouse dinner. What it has largely missed is the money trail that made Navatek worth the FBI’s attention in the first place — and the scale of what the company was really chasing.

As The Hill’s reporting on the case noted, a final spending bill carrying a $9.5 million appropriation for Navatek’s project passed in December 2019 — just months before the alleged March 2020 steakhouse deal. That appropriation shows the company was already embedded in the federal funding pipeline before Kao’s alleged meeting with Graham. And Navatek wasn’t playing for $10 million: The Hill reported the firm aimed to seek a total of $90 million across future projects.

That context reframes the alleged $40,000 meeting fee and the $100,000 campaign pledge. Against a $90 million target, the contributions were not the prize — they were the down payment. If Kao’s account is right, Navatek was buying a funding pipeline, not a single contract. And the FBI’s vetting of internal company emails suggests investigators were reconstructing exactly that pipeline when the case was stopped. Following that money was the central work of the Navatek FBI bribery probe.

What competitors missed: why disbanding the teams was the whole ballgame

The second thing most coverage underplays is why the administrative purge worked so completely. Public-corruption cases are among the hardest in the federal system: they require tracing money through campaign-finance filings, corporate records and appropriations riders, then tying specific official acts to specific payments. That work is done by a small cadre of career specialists — agents and prosecutors who spend years learning the wiring.

When the Trump administration barred the DOJ’s anti-corruption section from pursuing new cases and dispersed the career teams, it didn’t just pause the Navatek FBI bribery probe. It removed the institutional memory required to ever finish it. Witnesses age, memories fade, documents get shredded on schedule, and cooperating witnesses like Kao serve out their sentences. A paused corruption case doesn’t wait patiently — it decays. Each passing month makes the Navatek FBI bribery probe harder to revive.

This is also why the bipartisan composition of the alleged scheme matters for accountability. A probe that touched a powerful Republican and a powerful Democrat had no natural partisan champion. Neither party’s leadership had an obvious interest in seeing it finished — and both parties’ donors live in the same contribution ecosystem the case was exposing. The purge gave everyone in Washington the same gift: the Navatek FBI bribery probe ended with no findings, no trials and no acquittals — just silence.

Meanwhile, the administration has kept the DOJ’s political machinery humming in other directions. The department’s Operation Protect the Vote swept up 28 alleged noncitizens in what prosecutors called the biggest voter fraud bust in California history, and StateLineDaily covered that crackdown in full here. The contrast is the story: an aggressive DOJ against its political targets, and an emptied-out DOJ when the target is the political class itself. And in the same Oval Office week, the administration launched a $25 million whistleblower program asking ordinary Americans to report fraud — while the career fraud investigators were gone. See StateLineDaily’s coverage of the $25M WHIP program here.

What’s Next

Will Congress investigate the death of the Navatek FBI bribery probe?
Oversight committees have not yet announced hearings on ProPublica’s findings. With Democrats expected to take the House in the November 3 midterms, according to forecasters, subpoenas into the DOJ’s dismantled anti-corruption units are a near certainty — and the Navatek FBI bribery probe file would be Exhibit A.

Could the probe be revived?
A future administration could rebuild the DOJ’s anti-corruption section and reopen the file, but witnesses fade and statutes of limitations keep running. Kao’s 87-month sentence is already being served. The longer the teams stay dispersed, the harder revival gets. Reviving the Navatek FBI bribery probe would mean reassembling the investigators who built it.

Will Graham or Clyburn face any legal exposure?
Neither was designated a subject, and neither has been charged. The denials are on the record. But the FBI documented that both could have become subjects — and the case never reached the stage where charges were considered, let alone declined on the merits. The Navatek FBI bribery probe never reached the stage where those questions could be tested.

How will this land two weeks before the midterms?
For an electorate already furious about corruption — and for a president whose approval has cratered to record lows — the revelation that the FBI’s own corruption cops were purged just as they closed in on Congress is political dynamite. Expect the Navatek FBI bribery probe on the campaign trail this week.

Additional Details

Description: ProPublica reports that the FBI’s Navatek bribery probe — an investigation into whether Hawaiian defense contractor Navatek bought government contracts with campaign cash reaching Lindsey Graham and James Clyburn — was killed after Trump’s FBI purge dismantled the DOJ’s anti-corruption teams. The March 2020 Charlie Palmer Steak dinner, the $40,000 meeting fee, the alleged $10 million contract deal, Kao’s 87-month sentence and the lawmakers’ denials, explained.

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