They're still illegal. You can and should defend yourself from poor strangers who view their circumstances as justification to infringe upon you. You can and should enforce your border.
Or how are people fleeing from prosecution, looking for a better life, or just feeling like living somewhere else exactly hurting you? It's really a human right to move to another place, without reason required.
If you're thinking about jobs, skilled workers immigrating will compete with you much more than less-privileged people. And "we cannot pay for them" is BS made up the system as well. It is possible to pay for social security for everyone, but not if all profits go to shareholders of course.
People forgot this once Maduro was noped
>It's really a human right to move to another place, without reason required
Bhutan, Barcelona