Simplify the following text for a Grade 8 native English-speaking person.
Original: Dominique Strauss-Kahn ( ; born 25 April 1949 ) , often referred to as DSK , is a French economist , lawyer , and politician , member of the Socialist Party ( PS ) .
Simplified: Dominique Strauss-Kahn ( born 25 April 1949 ) is a French politician .