In the hours before Senator Lindsey Graham's unexpected death, he discussed the issues he would like to tackle - and shrugged off his health concerns.The longtime Republican from South Carolina spoke with President Donald Trump by telephone on Saturday night when he discussed his recent trip to Ukraine, and the president confided in him about his planned strikes on Iran, Axios reports. An unidentified person who spoke with Graham in the moments after told the outlet he complained he was feeling unwell.When the person then urged Graham to immediately seek medical attention, the Republican from South Carolina said he would do so on Sunday morning after his scheduled appearance on NBC's Meet the Press.He then joked, 'I can't die now. I still need to do the Russian sanctions, get Iran sorted out and do Israeli-Saudi normalization,' according to the outlet. But just a few hours after making the quip on Saturday night, the senator, 71, was seen lying on a gurney as first responders attempted life-saving measures in pictures obtained by TMZ. He appeared to be intubated as EMTs pushed the gurney into a nearby ambulance that was headed for George Washington University Hospital.Authorities first received a 911 call about a 'cardiac arrest' at Graham's home at around 8.30pm that night, according to multiple reports. Hordes of first responders were then seen descending on the street outside Graham's house. US Senator Lindsey Graham died unexpectedly on Saturday night. He is pictured answering questions from the media near an exhibition of damaged Russian vehicles in central Kyiv, on July 10, 2026Just about 25 minutes after the call, first responders had started CPR as the senator suffered from cardiac arrest, according to police scanner audio obtained by The Washington Post.Then, early Sunday, Graham's office announced he had 'passed away from a brief and sudden illness.' His cause of death has since been revealed to be 'Aortic Dissection due to Arteriosclerotic Cardiovascular Disease.' The Mayo Clinic defines an aortic dissection as a tear in the inner layer of the aorta, the body's main artery. It can be fatal if blood rushes through the tear. In Graham's case, plaque buildup on his heart weakened the aortic walls, causing a tear.'The death certificate will be PENDING until all the toxicological and microscopic testing are finalized, and at that point the death certificate will be updated to reflect the cause of death and appropriately classify the manner of death,' Graham's spokesperson said in a statement just before 5pm. DC Fire and EMS medical units and EMS supervisors deliver Senator Lindsey Graham to George Washington Hospital Emergency Room on the night of July 11, 2026. Senator Graham passed away in the early hours of July 12, 2026Amidst the July 4th recess break in Washington, DC this past week, Graham travelled to Ukraine, met with President Volodymyr Zelensky, and even visited a drone facility which was later destroyed by the Russians.Graham has also been targeted by Iranian leaders. An Iranian State TV host noted in a Sunday broadcast that she congratulated 'the Iranian people on the death [of] U.S. Senator Lindsey Graham, who has been sent to hell.'Political commentators, liberal and conservative alike, stepped up with their own theories about Graham's cause of death after agents from the Federal Bureau of Investigation were spotted at Graham's residence.Director Kash Patel had said his agency was providing all necessary resources for the probe. FBI Director Kash Patel is seen at a press conference in Washington, DC on July 1, 2026Megan Mobbs, Director of the Center for American Safety and Security at the Independent Women's Forum, a conservative think tank, noted on X that 'cardiac arrest tells us how his life ended. It does not tell us why his heart stopped.'She also added that, 'given the threat environment, the identities of America's adversaries, and Senator Graham's prominent role confronting them, the American people deserve certainty.''That means a complete forensic autopsy, preservation of all relevant biological specimens, comprehensive toxicology and histology, and consultation with federal law enforcement and counterintelligence authorities,' Mobbs concluded.Conservative commentator Matt Van Swol shared a video of Graham on X from Ukraine this last week, noting, 'I'm sorry, but Lindsey Graham dying out of the blue like this doesn't make any sense at all.''We have him on camera yesterday looking perfectly healthy. None of this is making any sense,' Van Swol said.Right-wing journalist Laura Loomer called for an 'investigation,' into Graham's death, especially as Russian president Vladimir 'Putin's advisor Alexander Dugin called for Lindsey Graham to be 'flattened' exactly 4 months ago.'While several figures were quick to assume foreign involvement in Graham's death, others pointed to medical explanations.Townhall columnist Dustin Grage shared that he was 'told by a source in South Carolina that Senator Lindsey Graham has dealt with blood pressure issues since his 40s,' also noting that, 'His father also died of cardiac arrest at age 69.''I know the conspiracy theories won't stop, but sometimes life just happens. Not everything is a conspiracy,' Grage added.Top conservative talk radio host Dana Loesch commented on Grage's post, noting that she agreed with his sentiment that Graham's death appeared to be 'sudden, but cardiac issues usually are.'Trump shared a tribute to the late Senator on Truth Social shortly after the announcement was made.'Senator Lindsey Graham, one of the greatest people and Senators I have ever known, is dead! He was always working, and was a true American Patriot. Lindsey will be greatly missed!!! DETAILS AND ARRANGEMENTS TO FOLLOW. So sad!,' Trump wrote on his Truth Social platform.Graham was one of Trump's closest allies in the US Senate, consistently voting to enact the President's agenda. The White House has lowered the flags to half-mast in his honor.The senator was also a staunch supporter of Ukraine and Israel, and he advised the President on foreign policy matters pertaining to Russia and Iran.In late March 2025, just a little more than a month after Trump took office, the President posted a lengthy endorsement of Graham, referring to the senator as 'a wonderful friend.'Vice President JD Vance posted his own lengthy tribute to Graham on Sunday, with whom he spent two years as colleagues in the US Senate, specifically adding that Graham 'fought like hell for the things he believed in, and he was just as willing to go to bat for you when it counted.'Congressman Jim Clyburn, the only Democrat representing South Carolina in Washington, also offered his condolences, sharing that their 'political relationship was sometimes partisan and passionate, but always pleasant and productive on behalf of the people of South Carolina.'