Simplify the following text for a Grade 11 native English-speaking person.
Original: In 1952 , after Smokey Bear attracted considerable commercial interest , the Smokey Bear Act , an act of Congress , was passed to remove the character from the public domain and place it under the control of the Secretary of Agriculture .
Simplified: In 1952 , Congress passed the Smokey Bear Act , an act of Congress , was passed to remove the character from the public domain and place it under the control of the Secretary of Agriculture .