Trump is CinC of the armed forces of this country. He could stop the entry of illegals at any time by deploying the Army to interdict them, just like the Navy and Coast Guard interdicts drug runners. He could build a wall right now, regardless of what Congress or the Senate has failed to provide, by declaring its need for national security purposes. Yet he fails to do any of this. It’s past time for Trump to **** or get off the pot.
That could easily lead to worse problems. He’s doing fine under the circumstances. You can vote him out in 2020, if you can pull that off.