Sen. Graham's Cause of Death: Aortic Dissection

Senator Lindsey Graham died from an aortic dissection, a tear in the inner wall of his aorta, according to a preliminary finding by the medical examiner's office. This condition was related to the hardening of his arteries. A final cause of death will be determined after toxicological and microscopic testing are completed. Graham, a Republican from South Carolina and a former Air Force lawyer, had served in Congress for over three decades and turned 71 just two days before his death on Saturday night. His office had initially stated he suffered from a "brief and sudden illness."

President Donald Trump, who described Graham as "like a member of the family," spoke with him on Saturday night after Graham returned from a trip to Ukraine. Trump noted that Graham sounded "a little bit tired, but perfect" during their conversation. In response to Graham's passing, President Trump ordered that flags nationwide be flown at half-staff until the following Saturday evening.

Senator Graham was a significant figure in Washington, particularly known for his hawkish stance on foreign policy and his advisory role to President Trump on matters concerning Iran and Russia. On Friday, he had announced an agreement with the Trump administration regarding a package of sanctions against Russia. As the chairman of the Senate Budget Committee, Graham also played a key role during Trump's second term, especially as Republicans navigated major legislation with a narrow 53-47 majority in the Senate.

Under South Carolina law, Governor Henry McMaster will appoint a temporary replacement for Senator Graham. A special primary election will be held within weeks to select a nominee for a special election. The winner of the general election in November will serve a full six-year term beginning in January.