Trump employs thousands and uses firms to vet employees and probably uses staffing agencies as well. I doubt seriously a man at his level interviews every employee.
There is also, of course, the issue of contractors building buildings, etc., who might use illegals under the table. Again, that is not Trump’s issue. A contract is not ownership of another firm.
The next shot at Trump will be some expose on one of his contractors using illegals. Trump’s answer will be,”You’re fired!” Next.
Because of the dismal failure of our schools especial in urban areas and big cities to teach up to date vocational education, practically the only labor force available for construction is Hispanic. Whites have a better chance to move to white collar jobs, and blacks are still worrying that grunt labor is demeaning. Before we kick out 12 million illegals, we better be sure that the workers are there to do the things we want done. That includes teaching useful trade skills.