Simplify the following text for a Grade 8 native English-speaking person.
Original: After getting no substantial support in the dispute , KÃ hler stepped down on 31 May 2010 , issuing a statement saying `` I declare my resignation from the Office of President , with immediate effect . ''
Simplified: After getting no support in the dispute , KÃ hler stepped down on 31 May 2010 . He made a statement saying `` I declare my resignation from the Office of President , with immediate effect . ''