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.
No other court has the power to declare laws unconstitutional than the Supreme Court. That is why it has the word supreme in it, no other court has this name I presume. Because they are one of the 3 branches of the government that hold such prestige besides the executive and the legislative branch of the government.