Yes, he is still responsible for his crime. Ignorance of the law is no excuse. It is your duty as a citizen to know, understand, and obey the law. This is why laws are written.
Police are responsible for controlling crime.
If you commit a crime, and are not a citizen of the United States, you can be deported, regardless of whether or not your parents are a citizen.
depends what crime - and when crime committed.
Not only is it a crime, it is horrible.
You can deported if you are here illegally and not a citizen. A citizen can't be deported from their own country, but they can go to jail for committing a crime.
Treason
The question is extremely unclear. . . BUT - - "Ignorance of the law is no excuse!"
Yes it is.
High treason seriously threatens the security of your own country
An Indictment.
yes, a crime is still a crime, it doesnt matter when it was commited
Generally *NO* law is followed in the committing of a crime - that sort of defines the word "crime".