President Donald Trump told reporters in the Oval Office on Tuesday that the FBI is "wasting their time" looking into the death of Sen. Lindsey Graham, brushing aside conspiracy theories that have swirled since the South Carolina Republican died Saturday night at age 71.
The remarks came as Washington's chief medical examiner had already issued a preliminary finding pointing to a natural cause, aortic dissection due to arteriosclerotic cardiovascular disease, a rupture of the aorta caused by hardening of the arteries. Toxicology and other testing remain pending, but two law enforcement sources familiar with the scene told NBC News that no new evidence of foul play has emerged since Saturday night.
Trump said he had reviewed medical reports and received a briefing from White House doctors. He was blunt about what he found.
"I know there's all sorts of conspiracy theories going along, and I think the FBI is wasting their time if they're doing that."
Graham had been in Kyiv the day before he died, meeting with Ukrainian President Volodymyr Zelenskyy. He had been pushing for tougher sanctions against Russian President Vladimir Putin and Moscow, a posture that fed speculation in some quarters about whether Russia might have played a role in his death.
Trump addressed that theory head-on during a Monday night appearance on Newsmax, saying he would "love to say yes" to the conspiracy but did not believe it.
"Just to answer the conspiracy theory, I'd love to say yes, but I think he, he had some problems. And his father died just about at the same age.... I'm a believer in the racehorse theory, you know, if you have problems, you have problems. And he had some problems that were a little bit deep-seated and not easy to find."
Trump also disclosed that he was one of the last people to speak with Graham, in a phone call on the night the senator died. In his Oval Office remarks Tuesday, the president described Graham's medical condition in personal terms, noting that Graham had complained to him about back pain, which Trump said can be a sign of aortic trouble.
"They say it's almost undetectable. You can detect it if you have a very bad back. That's a sign. It's a bad sign. So if anybody has a bad back... that's one of the primary signs. And he would tell me he had a bad back, but little did anyone realize it was for that. So, when that bursts, which it did, it bursts."
Despite the preliminary medical finding, the FBI dispatched a significant presence to Graham's row house on Capitol Hill on Monday afternoon. NBC News observed nearly 20 FBI and other federal agents gathered outside the home, which sits just blocks from the Capitol. Multiple agents entered and were seen taking photographs, though they did not appear to be removing items.
FBI Director Kash Patel has said the bureau is "assisting local authorities." Two law enforcement sources described the activity as proceeding "out of an abundance of caution." The FBI declined to comment on Trump's Tuesday remarks.
The scene raised eyebrows. Nearly 20 federal agents photographing the home of a senator whose preliminary cause of death is a cardiovascular event, with no evidence of foul play, is not a routine response. It is the kind of deployment that invites questions about whether the bureau is chasing headlines or fulfilling a legitimate investigative mandate.
The FBI's institutional credibility has been a running issue in Washington for years. Director Patel himself has publicly discussed the bureau's history of lying to obtain FISA warrants used to surveil Trump's 2016 campaign, a record that makes every high-profile FBI deployment subject to sharper scrutiny than it once would have received.
While the investigation played out in Washington, South Carolina moved quickly to fill the vacancy. Gov. Henry McMaster, a Republican, appointed Graham's only sibling, Darline Graham, to serve out the remainder of the late senator's term, which ends in January. She was set to take the oath of office Tuesday afternoon.
The appointment ensures continuity in the Senate without a prolonged vacancy. It also keeps the seat in Republican hands through the end of the term, a straightforward decision by McMaster that drew no reported opposition.
Trump, for his part, was juggling multiple crises at the time of his Oval Office remarks. He was meeting with Iraqi Prime Minister Ali al-Zaidi and simultaneously managing a situation in the Strait of Hormuz. The Graham matter was one of several questions reporters pressed him on, and he answered it directly rather than deflecting.
The Russia poisoning theory is the most prominent conspiracy circulating around Graham's death, but it is not the only one. Graham's hawkish stance on Moscow, combined with the timing of his Kyiv visit, gave the speculation a surface plausibility that the medical examiner's findings have so far undercut.
Trump's willingness to publicly dismiss the theories, and to call out the FBI's investigation as unnecessary, is notable. Presidents rarely weigh in so directly on active federal probes. But Trump has never treated the FBI as an institution above reproach, and his skepticism of bureau overreach has a documented basis.
The broader pattern is hard to ignore. Revelations about FBI "burn bags" and hidden documents tied to the Trump-Russia probe have reinforced a picture of an agency that spent years pursuing politically charged investigations with thin evidentiary foundations. Whether the Graham probe amounts to the same kind of overreach remains to be seen, but the preliminary medical evidence does not suggest a case crying out for 20 agents on the sidewalk.
The FBI's silence in response to Trump's remarks is itself telling. The bureau declined to comment, a standard posture, but one that leaves the public with no explanation for why the scale of the response matched a potential crime scene rather than a medical death with a preliminary natural cause finding.
Trump's relationship with the FBI has been defined by confrontation going back nearly a decade. His sharp criticism of former FBI Director James Comey and the broader accountability push under Patel's leadership reflect a president who views the bureau's institutional culture as resistant to reform and prone to self-justifying investigations.
The toxicology results are still outstanding. Until they arrive, the preliminary finding of aortic dissection remains exactly that, preliminary. If the toxicology comes back clean, the case for a natural death will be all but closed, and the FBI's deployment of nearly 20 agents to photograph a dead senator's home will look like bureaucratic excess at best.
If something unexpected surfaces, the calculus changes. But two law enforcement sources have already said no evidence of foul play has emerged. The medical examiner identified a specific, well-understood cardiovascular failure. And the president of the United States, who spoke with Graham on the night he died and reviewed the medical reports, says there is nothing there.
The question of what local authorities the FBI is "assisting" also remains unclear. Patel's characterization of the bureau's role as supportive rather than leading suggests the investigation may be more procedural than substantive. But the optics of a large federal presence at the home of a senator who died of apparent natural causes do not project restraint.
The broader political context matters, too. Graham had been one of the Senate's most vocal advocates for punishing Russia, and his death removes that voice at a moment when U.S. policy toward Moscow remains a live debate. The FBI's history of politically charged investigations means any probe touching on Russia, even tangentially, carries baggage the bureau has earned through its own conduct.
Trump told reporters plainly: "I don't see a lot of evil there." The medical examiner's preliminary findings back him up. The conspiracy theorists have a senator who visited Kyiv and a country they want to blame. What they do not have, at least so far, is evidence.
When an agency that has spent years rebuilding public trust deploys 20 agents to a scene the evidence says is a medical death, it might want to explain why, or accept that the president's blunt assessment will fill the silence.