US Sen. Lindsey Graham, a Republican from South Carolina, died on Saturday night from a tear in his artery, according to ...

The U.S. Senator died from an aortic dissection, when the lining of the artery tears.

The aortic tear that likely caused the sudden death of Sen. Lindsey Graham is a medical emergency that can rapidly kill.

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Editor's Note: APYs listed in this article are up-to-date as of the time of publication. They may fluctuate (up or down) as the Fed rate changes. CNBC will update as changes are made public. The U.S.