This Special Report describes noncitizens processed in the Federal justice system, including the number prosecuted and incarcerated from 1984 to 1994, the offenses for which they were prosecuted, and the sanctions imposed. The number of noncitizens prosecuted in U.S. district courts increased almost 350%, from 3,462 during 1984 to 10,352 during 1994. Approximately 50% of noncitizens prosecuted in U.S. district courts were charged with a drug offense. More than 50% of the noncitizens prosecuted in U.S. district courts were prosecuted in the Federal judicial districts near the Southwest border. Information describing classes of noncitizens, the processing of illegal aliens, and Federal grants to States to help defray the costs of incarcerating illegal aliens is also presented.