Mitch McConnell, the US senator from Kentucky and former Senate majority leader, was admitted to the hospital on Sunday morning.
Spokesperson David Popp confirmed the admission in a statement, noting that the senator is receiving excellent care. The specific reason for his hospitalization was not disclosed.
The 84-year-old Republican, who is the longest-serving Senate Republican leader, has battled health issues in recent years. McConnell has experienced several recent health emergencies and survived polio as a child.