Simplify the following text for a Grade 13 native English-speaking person.
Original: In early 1938 Tresca publicly accused the Soviets of kidnapping Juliet Stuart Poyntz to prevent her defection from the Communist Party USA underground apparatus .
Simplified: In early 1938 Tresca publicly accused the Soviets of kidnapping Juliet Poyntz to prevent her defection from the Communist Party USA .