It takes only a minute to verify if the ss# really belongs to the person claiming it, before the person is hired. It the name doesn’t match then they don’t get hired. Don’t need the cops not to hire someone. If they can’t find a job they go home.
They would go home too, if they thought they would be immediately picked up by the police.
If the governemnt was doing their job, the employer would have a lot less worry, and a LOT less wasted time.
Also, these immigrants are aggressive. If they weren’t they wouln’t risk a dangerous border crossing across a desert wilderness. As an employer, would you want these people continually coming into your human resource office? As an employer I don’t!
If the police picked them up. Charged them with fraud. Put them in jail for a few months, and then deported them, you would have far fewer crossing the border.
Also, let’s not forget the traffic stops, hospitals, the welfare office applications, and schools. If the cops picked these people up, jailed them for attempted fraud and stealing of government services, and deported them, employers would have far, far fewer of them trying to get work.