In 1994, when the U.S. Congress reauthorized the Hate Crimes Statistics Act, crimes based on disability were categorized as bias crimes. This sparked the Federal Bureau of Investigation (FBI) to begin keeping data that relates to all crimes based against persons, property, or society that entails someone with a disability. Once these crimes are recorded, they are then divided up into subcategories; therefore, disability status was measured out through either one's physical disability or their mental disability. The FBI did this in order to determine if the frequency of the crimes differed depending on one's disabled status (whether it was physical or mental).