Altering grades could make you got prosecuted forgery
Forgery is the criminal actions that involved producing a certain document or art that does not legally belong to you, such as bank form, paintings, college transcript, signature , etc. In United states, forgery could be punishable up to 1 year prison time and $ 2,000 penalty.
he powers not delegated to the United States by the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people
Do you mean the advantage of farming in Japan & NK?