I'm in favor of sealing the border to illegals.
But that won't stop them, it hasn't so far. The border is too big and too porous, no matter how much technology we throw at it. And if they can't cross the border they'll cross another one, or come in by sea or by plane. The only way to stop the flow is to start fining people who hire illegals. And if they keep doing it, sending them to prison. The situation we have now is like sending addicts to jail and letting pushers go free.