U.S. President Joe Biden speaks about the deadly tornadoes that struck Kentucky, in Wilmington, Delaware, U.S., December 11, 2021. REUTERS/Kevin Lamarque WASHINGTON, Dec 12 (Reuters) - U.S. President Joe Biden on Sunday declared a major federal disaster in Kentucky after a swarm of deadly tornadoes hit the state on Friday, an administration official said, a move that paves the way for additional federal aid. Kentucky"s governor Andy Beshear on Sunday formally requested the declaration, the head of the U.S. d disaster response agency FEMA told reporters earlier.