Originally, passenger profiling was introduced in the 1960s to identify potential hijackers that fit the "profile" of a person who is "likely to be a terrorist." However, this practice was discontinued in 1972 due to inefficiencies and was replaced by checkpoints and x-ray security. The Department Of Justice released a statement in 1997 claiming that automated passenger screenings would not have a "disparate impact on any group of passengers." The American-Arab Anti-Discrimination Committee (ADC) believes that "profiling, even under the best circumstances, provides an opportunity for the prejudices and stereotypes held by law enforcement and other officials to be expressed through discriminatory application of profiles. At worst, they are simply a recipe for bigoted behavior."