Simplify the following text for a Grade 11 native English-speaking person.
Original: Jeffrey Keith `` Jeff '' Skilling ( born November 25 , 1953 in Pittsburgh , Pennsylvania ) is a former American businessman and former president of Enron Corporation .
Simplified: Jeffrey Keith `` Jeff '' Skilling ( born November 25 , 1953 ) is the former president of Enron Corporation , headquartered in Houston , Texas .