AIUI there are several forms of unauthorized presence in the US that are not crimes (and, like most traffic law violations, are just misdemeanors), e.g., overstaying a visa, losing an asylum claim, etc.

Also the moral culpability of people brought to the US illegally as a child is approximately the moral culpability of a passenger in a child seat in a speeding car IMO. Continued presence in the US without authorization is (again AIUI) not a crime. My understanding is there are quite a few "dreamers" in tech.