Trump's aide Lindsey died of aortic tear, according to preliminary findings

US Senator Lindsey Graham, a close ally of US President Donald Trump, died of an aortic dissection caused by arteriosclerotic cardiovascular disease, according to preliminary findings. An aortic dissection occurs when a tear develops in the inner layer of the aorta, the body's largest artery. He was initially reported to have died after a "brief and sudden illness".