This is the sad but inevitable outcome of our busted immigration policy since the late 90s.
Congress never got its act together - nobody bothered to lead - and so we lived with a variety of poor compromises as Americans got angrier and angrier at the lawbreaking. It's incredible that we had to settle for DACA instead of something like the DREAM Act.
Then the failure to act during the past 5 years made it all even worse.
Luckily most illegal immigrants are very resourceful and eager people who stand a good chance at landing on their feet.
Why does US continue to attract so many immigrants across the economic scale and education level