How many times can your question of why be answered?
They are called illegals BECAUSE they are illegally here.
Are you seriously telling me that you don't understand how that's NOT an answer?
"Why do we do this thing?"
"Because that's what we do."
"I'm asking WHY we do that."
"Because we do the thing, that's why."
"No, I'm trying to ask WHY we do that specific thing."
"Because that specific thing is that specific thing and we do it."
This is getting increasingly tedious.
Why do we call criminals criminals...BECAUSE they committed crimes.
Then why we not just call them "criminals"? Why create the special category of "illegal" just for a person
in the country illegally? Why not call people who carry illegal weapons "illegals"? Why not people who rape or murder, or commit fraud? Why are they not "illegals"?