They are usually able to benefit it when they are old enough to understand ( Ages 10 to 13 )
I believe the answer is: Stimultant
Consuming stimultant would increase the brain activity in your central nervous system. This would increase thee needs to seek source of excitements or other pleasurable activities, that could cause someone to have low attentions pan and disruptive behaviors.
The president cannot spend any money unless it is appropriated by the Congress