What law did they break? Since they were brought here illegally at 17 years of age or less, they didn’t break any law, rather their parents broke the law. Even if they came across themselves at age 17, breaking the law as a minor doesn’t normally count as an adult (depends on which law is broken).
Any person who is not a citizen, is here illegally.
They are in violation of the laws of our nation.
Quit focusing your worry on these illegal aliens, and start concerning yourself with the citizens that are abused ever single day as these people sap this nation dry and attack them in criminal acts.