Gov. Henry McMaster (R-SC) has the sole authority to appoint Graham's replacement, per South Carolina law.

The South Carolina senator’s office said the 71-year-old died after a “brief and sudden illness.”

The loss of personal friend and outspoken supporter of overseas interventions is a blow for the President

Gov. Henry McMaster (R-SC) has the sole authority to appoint Graham's replacement, per South Carolina law.

The South Carolina senator’s sudden death leaves a void that the White House can’t afford.