Can’t deport Americans, no , but he can go after all these companies, tell illegals they will be jailed if they do not go back to the country they came form and apply for a working visa through the embassy there.
That is what legal immigrants do and if these illegals after 1 year have not gone back then they are jailed, fined maybe and certainly sent back to never return under a visa or illegally due to a wall, ditch and increased presence for the border patrol who now can do their job , instead of giving illegals diapers and fod.
Nobody ever talks about arresting employers. I wonder why?