Abuse of central nervous system (CNS) stimulants is common. Addiction to some CNS stimulants can quickly lead to medical, psychiatric, and psychosocial deterioration. Drug tolerance, dependence, and sensitization as well as a withdrawal syndrome can occur.
The judicial branch decides what amendments are unconstitutional as well as acts of the president. However, if the judicial branch were to declare an act of the president unconstitutional, it would mean that Congress agreed to this act.
Chief Justice John Marshall's ruling not only declared the Judiciary Act unconstitutional, it strengthened the Supreme Court with the power of judicial review. Judicial review allows the Supreme Court the power to declare Congress's laws unconstitutional.