The situation is nuanced, complicated and chaotic.
The last Republican president was elected with one of his main campaign pledges being an amnesty plan because illegal aliens were here doing jobs that ?Merkins din?t wanna do.?
That may not have been entirely untrue at the time, and it may not be entirely untrue now.
The current insanity happening here in California is the state adopted a policy that local law enforcement shouldn?t cooperate with ICE in deporting illegals being held in local corrections facilities for crimes having NOTHING to do with having crossed the border - other than, of course, if they hadn?t crossed the border they wouldn?t have been here to commit the crimes they were being incarcerated for.
Some localities are refusing to implement the policy of the state.