Hoover built the FBI into a larger crime-fighting agency than it was excepted to be. He created a number of modernizations to police technology, such as a centralized fingerprint file and forensic laboratories. Hoover also established and expanded a national blacklist, referred to as the FBI Index or Index List which contains a list of criminals that Fbi does not have much evidence on. Hoover in the novel by Lauren plays an important role as Marie’s father bill was one of a few handful of dark skin agents hired by J Edgar Hoover who were brought to participate in counterintelligence program. Hoovers idea of a perfect agent “was the white boy in a black suit, crew cut, spit shined, The Superman. Assuming Maries father bill was far from that, he didn’t even like his agents drinking coffee. The threat of political violence occupied many of the Bureau’s resources as did the threat of foreign espionage. In spite of Mr. Hoover’s age and length of service, presidents of both parties made the decision to keep him at the helm of the Bureau. When Mr. Hoover died in his sleep on May 2, 1972, he had led the FBI for 48 years

The Fbi is a organized bureau created for the domestic security and intelligence of the United States .

In the 1930s, the FBI attacked the violent crime by gangsters and implemented programs to professionalize U.S. law enforcement through training and forensic assistance. For example, the Bureau opened its Technical Laboratory to provide forensic analysis on Bureau investigations as well as services to other federal, state, and local law enforcement officials.

During the 1940s and 1950s, the Bureau made headlines for its staunch efforts against Nazi and Communist espionage. During World War II, the Bureau took the lead in domestic counterintelligence, counterespionage, and countersabotage investigations.

In the 1960s and early 1970s, the Bureau took on investigations in the field of civil rights and organized crime