Sen. Lindsey Graham, R-S.C., died Saturday evening following a "brief and sudden" illness, according to a statement from his office."On the evening of Saturday, July 11, U.S. Senator Lindsey Graham passed away from a brief and sudden illness," his office said."Senator Graham's family appreciates prayers at this time and asks for privacy during this incredibly difficult period," it continued.This is a breaking story; check back for updates.