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.
Ways the Judicial branch checks the Legislative branch: Can declare laws created by Congress unconstitutional. Congress can then rewrite the law so that it does not go against the Constitution.