Yes, those armadas of baby-birthing boats must not berth here. That they're always making up absurd scenarios like this to argue for their hideous policies shows how random and arbitrary they are. They're designed only to rile the base and outrage the rest of us.
He's being illustrative here but this this actually summarizes so much of conservative policymaking on issues well beyond immigration.
"We must drop everything to focus on being as cruel as possible or risk a wildly improbable, highly contrived scenario I have just invented."