The Justice Department is fighting to yank citizenship from a convicted Cuban spy who briefly served as a US ambassador to Bolivia in the early 2000s, while quietly feeding secrets to Havana. Federal prosecutors filed a civil denaturalization complaint Thursday against Manuel Rocha , arguing that his history of aiding the Cuban government against the US for decades is grounds to void his citizenship. “Victor Manuel Rocha was not a low-level operative. He was a former United States Ambassador and senior government official who admitted he secretly served the Cuban regime for decades,” US Attorney Jason Reding Quiñones for the Southern District of Florida said in a statement. Manuel Rocha aided the Cuban government for four decades. via REUTERS “This civil denaturalization case is about finishing the job,” Quiñones added.…