Simplify the following text for a Grade 7 native English-speaking person.
Original: The only time Hindenburg ever objected to a Nazi bill occurred in early April 1933 when the Reichstag had passed a Law for the Restoration of the Professional Civil Service that called for the immediate dismissal of all Jewish civil servants at the Reich , Land , and municipal levels .
Simplified: The only time Hindenburg ever tried to stop a Nazi bill was in early April 1933 . The Reichstag had passed a Law for the Restoration of the Professional Civil Service .