Simplify the following text for a Grade 9 native English-speaking person.
Original: Tracey Ullman ( born 30 December 1959 ) is an English-born stage and television actress , comedienne , singer , dancer , screenwriter and author .
Simplified: Tracey Ullman ( born December 30 , 1959 ) is a British-born , now U.S. citizen comedian , actress , singer , dancer , screenwriter , and author , who is most famous for being the host of her variety television show .